voicing their anger, demonstrators in hong kong march for the eighth straight week. >> in the united states, growing shock and outrage. the u.s. president calling a prominent congressman represents a rodent infested mess. >> we take you behind the scenes to see what it takes to break out in a crowded field of contenders, come 2020. >> welcome to our viewers here in the united states and around

the world coming to you live from atlanta. i'm natalie allen. >> newsroom starts right now. 4:00 a.m. on the u.s. east coast. protesters are marching in hong kong through the financial district. the eighth straight week of pro-democracy demonstrations. take a look at these live images. 4:01 in hong kong. >> it is happening just one day after violent clashes during an illegal rally. police say they fired rubber bullets and tear gas into the crowds after protesters threw bricks and glass bottles at them. >> kristie lu stout joins us on the line from hong kong. you're in the midst of things, what is expected there today? >> caller: natalie, i am at an

authorized gathering here in the heart of hong kong and its central district. there are thousands of people gathered here, and it has turned no an unauthorized march. we haven't confirmed the destination, but we believe they are marching toward the police headquarters. it has all come after those dramatic scenes that played out last night in the far borders of hong kong where police used tear gas, rubber bullets and pepper spray to fend off a protest. there were scenes of all-out chaos. absolute pandemonium inside that train station last night where live on cnn, we brought how the police charged into that place usi using pepper spray and batons. 24 people have been hospitalized as a result of the clashes yesterday. human rights groups have condemned that response. that has mobilized this response

that we're seeing right now with thousands of people, if not more, mobilizing in the heart of hong kong, underneath the china building. next to the hong kong court of appeals. and then this unauthorized, unlawful march toward the police station. now i have to say that the protest was originally organized to condemn the police action that took place last week. initially, we thought this would turn into an unlawful march toward that area. that's where we saw action take place in front of the liaison office. we saw hard core protesters vandalize the building, and that raised the alarm here whether beijing or china would get involved in this ongoing protest. earlier, we put that question to a pro-beijing lawmaker currently in vancouver. we asked if the pla would get involved. this is what he had to say.

>> let's just say that i have connections with beijing, and i know what they are thinking about, okay? the worst that can happen is carrie lam will step down, and eventually, an inquiry will take place. we can take care of our own problems. we want all foreign intervention and foreign elements who stay out of hong kong, and we also want beijing to leave us alone. >> caller: that was comment from pro-beijing lawmaker, but he's made it very clear that the weeks of protest that have taken place here in hong kong, this is something up to hong kong, its government and police force to resolve under hong kong law, matters fall under the hong kong government and the hong kong police. i spoke with joshua wong, a

pro-democracy leader. i asked if there's any behind the scenes reconciliation or talks between the hong kong government and the protest leaders of the protest movement. he said no. they offered to talk to carrie lam. she has not responded to their request. natalie, back to you. >> and i'm sure that's frustrating after so many, many rallies that we have seen right here take place, that they're not hearing from the government as far as what they want. so a crowd masses yet again there in the afternoon in hong kong. we will certainly stay with this story as it develops. kristie kristie lu stout, thank you very much. we'll be in touch. here in the united states, the outrage is raw and real after the u.s. president, donald trump, insults an american city and its prominent african-american representative to congress. this time the target, veteran house democrat elijah cummings, chairman of the house oversight

committee. >> the president's tweet called cummings a bully and said the congressman's district in maryland was a rat, rodent-infested mess where no person would want to live. we get more on this from boris sanchez at the white house. >> reporter: it appears that president trump was set off on this twitter tirade about representative elijah cummings and the district he represents, which includes the city of baltimore for a combination of reasons. the president obviously unhappy with the way representative cummings drilled dhs authorities and apparently watching fox news. in the hours before this series of tweets was sent out they did a segment about baltimore in which a commentator negatively compared conditions in that city to the southern border, laying the blame on representative cummings. that's where you get the president's line of attack. forget questions about decorum

or race baiting. there's also the fact that these tweets are misinformed. elijah cummings' district is one. most educated and affluent districts in the country. so the picture the president is painting is inaccurate. mayor jack young weighed in. >> i guess everybody in the seventh district will be assaulted, including me. i mean, drive through the seventh congressional district. see all the developments we have done and are still working to rebuild some. areas that need the help the most. for him to say that was an insult to me as a resident who lives in the seventh congressional district. that it was a total insult. we're not going to ignore anyone degrading the city and the leadership. no one. i look at it as defending baltimore city, the city where i

live. >> president trump as we have seen before, digging in, tweeting this out on saturday evening, the president writing, quote, elijah cummings spends all his time hurting innocent people through oversight. he does nothing for his very poor, very dangerous and badly-run district. he #blacks for trump. it appears he will need help courting the african-american vote. he got 8% from the african-american community during the 2016 election. boris sanchez, china, at the white house. >> many democrats are furious over mr. trump's remarks and are pushing back hard on television and social media. congressman cummings tweeted off this, i go home to my district daily. each day i wake up and go and fight for my neighbors. it is my constitutional duty to gone duct oversight of the executive branch but my moral

duty to fight for my constituents, and this reaction also from nick mosby, speaking earlier with anna cabrera. >> if president trump ever decides to step foot in any part of woes baltimore he will see hard-working americans who wake up every single day who try to prepare their kids to become the best americans, who own small businesses, who are the bedrock of what we see in communities all throughout this country and for him to try to disparage and insau insult an overwhelmingly part of baltimore and maryland is unacceptable. >> house speaker nancy pelosi was born in baltimore and defended cummings as a beloved member of congress and a champion of civil rights. pelosi added, we all reject racist attacks against him and support his steadfast leadership.

elizabeth warren went a step further, listen. >> donald trump once again is a racist who makes ever more outrageous, racist remarks. to be attacked by a president, issuing racist tweets is beyond insulting. it is disgusting. this president brings shame to himself and to the office. >> and hometown newspaper, "the baltimore sun" summed up its opinion with this headline. better to have a few rats than to be one. we have mainly seen silence from republicans on mr. trump's tweets. the lieutenant governor of maryland who is a republican did respond, tweeting, mr. president, i have substantial policy differences with congressman cummings. however, i hope your criticism is not directed at the many good and hard-working people who live in the district.

>> it's fair to say that some stories hit a little closer to home than others, especially for people who grew up in baltimore, the place they call home. but the word infested has an african-american journalist to hear that word infested used over and over seemingly reserved only for people of color the president attacks, i understand how my colleague, victor blackwell felt as he delivered the facts straight down the line, but the attacks hurt. listen. >> infested, he says. the president says about congressman cummings' district. that no human would want to live there, you know who did, mr. president? i did.

there are challenges, no doubt. when people get up and go to work there, they care for their families there. they love their children. who pledge allegiance to the flag, just like people who live in districts of congress men who support you, sir. they are americans, too. >> sometimes it's not about right and left. sometimes it's just about right and wrong. so to reiterate victor's point, mr. president, these are americans too. >> well said. it will, we'll see if this issue shows up in the next debate. democrats are just days away from the second round, and we'll talk about how they will struggle to set themselves apart. that's coming up. also, two americans are sitting in an italian jail. police say they stabbed a police officer there. we go live to rome for details about this case.

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on saturday night. >> billde blasio,saidthe shooting shatters a peaceful event. this happened at a park and one person is in critical condition. well, the next round of democratic national candidate debates will be tuesday and wednesday in detroit hosted by cnn. it is a crowded field, as most of you know. >> for the front-runner, joe biden, this is a chance for him to assert himself, stand out more forcibly, after the less n less-than-commanding debate. no doubt, the candidates are spending the weekend practicing for the debate moment. >> fortunate tends to mile on

those who are best prepared. for those about it, let's start with glorious boerger. >> in the first primary debate, it was almost off the stage. >> that is really, to me. >> pointing to people and hoping that people know you. just vulnerable. >> that debate would be his last. >> today ends our presidential campaign. our polling stayed flat. it didn't go anywhere. >> remaining at less than 1%. and as the field lines up for the two cnn debates, the pressure is really on. if the fall, securing podium spots can be hard. >> there's not going to be some after shot after this.

not qualifying for the debate is a lot of essential single. what can i do that this isn't the total disaster here. >> attacking prices. stewart stevens has prepped republican candidates for george w. bush and dick cheney. >> he would never make an ad in a says, i don't know. >> what really divides dwights the friction. >> like kamala harris did. >> there was a little girl who was the second class to integrate her schools. and that little girl was me.

she got her lightning. >> it didn't seem contrived? >> she's comfortable talking about race and doesn't choice. >> the president of the yeets, or the vice president. if you were joe biden right now, what would you tell him to do? >> be on offense. you're there to win votes. you're not there to buy your lead. >> that's fine in you're cody or the other guys, breaking out will be hard to do.

>> do we need to be there in barbec barbecue? >> 4:45. >> who is counting. >> what can you do real, really? >> have a moment that gets replayed. we're going to sofl the issue of diamond change-up, pass the torch. >> do you think you got a little too torchy there? >> i thought it looked like

someone who had several torches. >> reporter: in she's the deb e debates presence or everything can be them. it's the can do or an audience. they're going to sink or swim. >> after all of the study and e rehall rehallals. you're watching on television, and they're doing everything. but then, there's no way for you to know what it is like. call i can tell them is to watch for body position and then, for all lane to get a top. >> it will come back to bite you.

>> impress, dwloiroglorious, gr georger. >> scott lucas, and the founder and editor of e.a. sports england. >> let's talk about joe biden. promising to take off the gloves and no more mr. nice guy. isn't that what voters like about joe biden? >> it has to be interesting with joe biden. he was riding the wave of name recognition. when he was tested on yish, he went on to stay their.

about limit change. i think joe biden has to get down and do nationals. kamala harris and cory booker. is this the winning strategy and focus on the present for present? >> your experts talking about a green that. but we have a creative for a policy.

kamala harris got her action because it is a point to issue for the debate. and elizabeth warren, putting out more of the policies, if it's air rouse, and i said, where is the beef? that determine of his lens, really nation to within his title. does sanders have the support of appeal on the last election center?

>> he has the name cig sure if taught to me was having people supporting me to la can he real gain the thought that he has something distinctive to say. he struggled to do that. let's see if he can retake the stage, especially someone able to take the issues. >> scott lucas, wither if spektive. >> thank you, george. >> the next democrat iic debate live here on cnn. you can see an encore presentation, 7:00 a.m. london sometime.

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just days away from the big debate. immigration has been a keystone of controversy for the president. the president has been slammed for calling a muslim ban and inhumane conditions at border shelters. >> these policies are what the candidates of 2020 seized upon.

ed lavandera looks at where they agree and where they don't. >> reporter: what happens here along the u.s. southern border casts a long shadow of the presidential 2020 election. and democrats are pushing their own vision in the age of trump. >> the president thinks he can turn people against immigrants to distract them from the things that will make it so hard to get ahead in this country right now. >> reporter: they are the opposite of president trump, vowing to end what they see as trump using immigrants to stoke the fears of americans. >> we can hold all humanitarian obligations in the valley of this nation. >> the democratic fields are some of the strongest voices on this issue. julian castro, the san antonio mayor, who was housing and development secretary under president obama, was the first to reveal a detail immigration plan.

both, as well as many others in the democratic field call for a pathway to citizenship for undocumented imxwramigrants in country, or brought to the u.s. as children, known as dreamers, and closing border wall detection. and castro and o'rourke have clashed over a section of the law that makes it a crime to entered the u.s. an illegally. >> they're using section 1345 of that act, which contrriminalizi aloss the border to incarcerate the parents and separate them. some of us on this stage have called to end this stage. come have not. >> we want to make sure we don't criminal size those who are the

seeking asylum. the detention of families have shaped the rhetoric or most democrats. elizabeth warren is for most candidates calling for families not to be detained. >> no great nation tears families apart. no great nation locks up children. we must, at the borders, respect the dignity of every human being who comes here. >> reporter: the trump administration's hard-line approach, has called for some candidates to end the customs enforcement agency. >> this i.c.e. as it's formed now, should be apoll issboliabo. >> most candidates are not going that far, asking its duties to be passed off to other agencies.

>> it's not just i.c.e. it's very clear that the immigration system -- you heard some of it. it's absolutely broken. >> reporter: democrats are pushing for open borders and being weak on security. it's a question that will follow these candidates. >> it's part of what this president is trying to do to misinform the american people. to say that democrats don't care about border security. we have to enforce our laws and keep our borders safe. >> reporter: the shadow of the border can casting a deep divide on the campaign trail. ed lavandera, cnn, dallas. not what you want to see when you go to the beach. it is nasty and it stinks. and it's invading beaches from mexico to miami. why massive amounts of seaweed

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yeah. it's after stage 20 on saturday. >> yeah. the tour de france finished on sunday stage. that's except for one final sprint. he is eyeing the title for the first time in 34 years. >> the people of colombia love that. some of the most beautiful beaches of the western hemisphere face an leg and smelling effect of climate change. >> this is just sad. once-pristine shores on beaches like these, like miami beach, florida, they're seeing sands and water turned into this. seaweed on large swaths of that beach.

>> i was thinking, you can't go in the water. derek van dam is here to talk about what's causing it. >> it's the largest algae bloom ever recorded across the planet. it stretches from west africa to the gulf of mexico. it's not only obnoxious. it's a health issue and ike logical issue. 4 million people travel from the u.s. to the yucatan peninsula for vacation. 2 million people from europe and canada, to what they believe they will be a pristine beach holiday. i would put my nose up and turn the other direction, as well. nasa was able to track the algae bloom over the decade or so.

look at the difference between 2011 and 2018. it becomes more dense as the years progress. there's a number of factors here. it stretches over 5,000 miles. from west africa to the gulf of mexico. 22 metric tons. that's equivalent to 12 double-decker buses. in small doses, it provides a lab at the for marine life. but when it accumulates on the shorelines, that's when it's a mess and hard to clean up. what's causing the problem? there's two different inputs. there's upwelling or an overturn of ocean that's happening. but the human track, is back to the amazon river. there's deforestation, and the

fertilizers. the runoff from the heavy rainfall, moving into the amazon river. that goes into the ocean. that's providing a nutrient tree point. that's the algae bloom and the explode. it only takes an action in the wind currents or the popular beaches. >> they rely on tourism. and some of the people in miami are worried about their property values at this point. >> it's in their best interest to clean this up and solve this problem. the day's top stories are just ahead. >> we'll be back and continue to monitor what's happening in hong kong. we'll be back. termites.

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this is a live look at protesters gathering yet again in hong kong. they're demanding justice after a day of violence. they're returning and marching in hong kong. sparking outrage. the u.s. president attacks an african-american congressman. calling his district, quote, rat-infested. an intel report finds russia targeted all 50 states. but u.s. republicans block bills to keep it from happening again. >> welcome to our viewers here

in the