melissa chan is there in union square, and melissa described the scene, and i don't know what the demonstration is to the parts of the city, or if they're circling union square. >> it's unlawful obstruction of pedestrian traffic. >> and we lost it. just like that. okay. we lost it. so can we go back to the live pictures? and we'll see if we can get her back. can we get the live pictures back up? there we go. new york square in new york city again this demonstration started maybe an hour and a half, 45 minutes ago growing in size here, and you can see a couple of the signs but it's in support of demonstrations going on in baltimore right now, and demonstrators there are obviously wanting answers of what happened to freddie gray why were the police chasing him and what happened in the 45 minutes between the time that the police arrested him and the time he was taken to the hospital. so we'll keep an eye on the situation, and there were demonstrations as well. we'll follow all of it as well. >>> in other news, nuclear negotiations with iran on capitol hill today. the senate is debating giving them

melissa chan tells us more been buying and selling water. farmers and officials cutting deals for water >>> in the race - rand paul says he is running for president. president. [office phone chatter] [frogs croaking] you know what, let me call you back. what are you doing?! [scream] [frogs croaking] [yelling and screaming] it's back! xfinity watchathon week. the biggest week in television history. it's your all-access binge-watching pass to tv's hottest shows, free with xfinity on demand. xfinity watchathon week. now through april 12th. perfect for people who really love tv. al jazeera america gives you the total news experience anytime, anywhere. more on every screen. digital, mobile, social. visit aljazeera.com. follow @ajam on twitter. and like aljazeera america on facebook for more stories, more access, more conversations. so you don't just stay on top of the news, go deeper and get more perspectives on every issue. al jazeera america. >>> tonight after another candidate throws his hat into the ring for 2016. >> i have a message. a messa

melissa chan looks at the drought's impact on rich and poor. >> the ravages of the california drought. drying reservoirs, fall low fields a state of emergency. but in marin county it's water everywhere, and every drop to drink. >> so our reservoirs are at 94% capacity right now, which is average for this time of year. >> it's one of the richest counties in the state and the country. and the story of the haves and have nots, here is yet another problem these residents don't need to worry about. >> we take a look up north and we can't help to be envious. they have hot tubs, swimming pools, government courses streams that are running. we're sitting here being told think twice before you flush. >> the drought has not had an uniform impact across the state. instead, some 400 water districts produce 400 different scenarios. >> we're not part of the state water project or central valley project. we are he an unique system here. >> as you can see with the situation here in marin good water management is key and can have act back on the worst an impact on the region. >> retired farmer worries

melissa chan has a report on how some have many and others don't. >> drying reservoirs, fallow field, a state of emergency. but north of san francisco in marin county, it's water water everywhere and everywhere to drink. >> our waters are 94% of capacity right now which is about average for this time of year. >> it's one of the richest counties in the state and the country. in the story of the haves and have nots, here is another problem these residents don't have problems with. >> we have hot tubs they have swimming pools they have golf courses they have streams that are actually running. whereas we are sitting here straggling with as many as we have and saying think before you flush. >> the drought has not had a uniform impact across the street. 400 different water districts produce 400 different scenarios. >> loot of information coming out of california is really looking at the snow pack and the customers that are dependent upon that. we are not. we are not part of the state water project or the central valley project. we are a unique system, has a unique water supply, our mount ta

melissa chan in times square, what have you seen from the streets of new york tonight? >> reporter: toint we started antonio, we started out in union square, we didn't see numbers, but definitely a sizable crowd and then people started marching. you have different marches in different parts of the city. right now we are in times square. i don't know how clearly can you see, there are protesters behind us they have been chanting black lives matter. we have talked to protesters asking them why they came out a lot of them were out here in december in the post-ferguson and death of eric garner case, they say they're coming out again, some people feel they are participating in an historic moment here in the united states, meaning this is a pivotal moment. >> melissa i know -- >> i look on tv there's another innocent black father son student person that quite frankly looks like me, being killed or being reported as unjustly handled in some way. i couldn't stay at home. >> vie son who is 15 and also black and i just don't want to see him get killed with all these changes happe

melissa chan takes a closer look at the business of buying water. >> reporter: water is actually notng distributed evenly across the state. there are someplaces that get a lot of water, and other places that are very short on water. we have shown you plenty of reservoirs that are half full two-thirds full and you see that water mark where the water used to be. so we thought it would be a good idea to show you a reservoir that is almost completely full and we spoke to officials to find out exactly why that is the case. >> a lot of the information coming out about california is really looking at the snow pack and the customers that are dependent on that. and we're not. we're not part of the state water project or the central valley project. we're a unique system that has a local supply, our mountain is where most of our water comes from. >> >> reporter: it is actually one of the richest economies in the entire state. so this could be one of the haves and the have nots with the haves, having enough water. but it's also about the luck of mother nature and good water management. we'll tal

melissa chan examines the buying and selling water. >> reporter: chances are you have eaten produce grown with water from the reservoir, it's a way the drought touches americans. in the last 18 month, it's been difficult, the situation is desperate. it is truly desperate. >> another dry place means farmers have touch choices it make let the land be fallow or try buying water. >> the agencies are making bids others making bids. we are having to compete. we are seeing prices unprecedented. it's really reflective of how bad the situation is. >> rural california's purchasing power may rule out to los angeles. the metropolitan water district of southern california says it's the largest provider of drinking water. ford authorised me to buy water from rice farmers in northern california and we are hopeful it will turn out, it's unclear. if the weather is dry, they won't have water to sell. steve is a rice farmer who might have water to sell. the sale depends on the water alio sayings. if we don't get full allocation from lake orville. then we won't sell yig. if we go get full allocation which do

melissa chan continues the coverage and the business of buying and selling water. >> chances are you have eaten produce grown with water from the san luis reservoir. >> the last 18 months have been difficult. the situation now is desperate. truly desperate. >> another dry season means farmers have tough choices, let the land lie fallow or buy from elsewhere in the states. >> our agencies making bids. others making bids. we are competing for a limited resource we are sowing prices unprecedented and it's reflective of how bad the situation is. >> reporter: rural california's purchasing power may lose out to los angeles. the metropolitan water distribute is the largest provider of drinking water, serving 19 million people. >> ford authorised me to by $70 million from rice farmers in north california. we are hopeful that will turn out. it's unclear. if the weather stays this dry, they may not have water to sell. >> this is a rice farmer who might have water to sell. planting starts in a few weeks. the sale depends on his water allocation which he's waiting to hear from. >> if we don't ge

melissa chan is here to tell us about one index that scientists are using. >> it is not perfect but it's a common way for social scientists to measure inequality. and it's called the genie coefficient. here's how it works. zero represents absolute equality. everyone has the same amount. and 100 would be someone has all of the wealth in the country. there's a connection between the genie coefficient and instability. 41.1 compare that to sweden, a country known for its knock equality. and it has a score of 25. and let's look at the countries with a reputation for unrest. china, a genie coefficient of 47. and that's lower than the united states, and turkey has 39. if we take the jenny coefficient seriously unrest shouldn't come as a surprise. that's what they said to me today. >> it's particularly true here in the united states, because we have made such a thing for the last half century about being a middle-class nation, and about everybody having a shot at the so-called american dream, and so on. in a society that has built up expectations of the sort we did, to impose on such a society a

melissa chan was on the streets of new york last night. >> the prosecutor tests first started wednesday evening 6:00 p.m. in union square. it was a sizeable crowd and they started rallying saying black lives matter. we spoke to different protestors. there was a couple of african-american women who brought their toddlers and said they believe this is a pivotal moment in american history and want their family to participate and be part of i have the. other protestors very angry as police brutality and asking for accountability. after the main rally in union scare, marshes walked the city. there's been groups throughout the evening. one group has been in and out of times square here saying and repeating the slogan black lives matter all in salad dart with baltimore. >> for the first time in history, a major baseball game was played without fans. >> we support the city of baltimore, and we're out there playing for the fans. we are playing for our families, but we play for the fans, the city of baltimore. that's what's across our chest. we're trying to represent them in the best way. >> fans

. >> the drought in california's one example of the issues affecting our fragile planet, as melissa chan tells us now many farmers face the choice of grow crops or sell their water. >> chances are you've eaten produce grown with water from the reservoir in california. that's one way california's drought touches all americans. >> the last 18 months have been extraordinarily difficult. the situation now is desperate truly desperate. >> another dry season means farmers have tough choice to make let more land lie follow or try buying water. >> we're having to compete for what is very limited resource. we're seeing price unprecedented this year, and it's really just rive of how often bad the situation is. >> rural california's purchasing power might lose out to los angeles. the water district of southern california said it's the world's largest provider of drinking water, serving 19 million people. >> they authorized me to buy $7 million worth of water from rice farmers in northern california. we're hopeful that will turn out. it's unclear. if this weather stays this dry they probably won't h