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. >> i'm scott pelley. those stories and more, tonight, on "60 minutes." ( ticking ) >> scott pelley: much of the world was horrified when saudi arabia sent a hit squad to turkey to murder "washington post" columnist jamal khashoggi. tonight, the man you are about to meet says a second saudi assassination team was sent to kill him in canada. saad aljabri was number two in saudi intelligence, and he was among the best friends america had against terrorism. now, saad is asking america's help. truth is hard to triangulate among spies, despots, and the middle east. you're going to hear that saad aljabri may not be spotless. but as a spymaster, saad says he has one more favor for america: a warning about a prince, with the power to trouble the world. >> dr. saad aljabri: i am here to sound the alarm about a psychopath, killer, in the middle east, with infinite resources, who poses threat to his people, to the americans, and to the planet. >> pelley: saad aljabri is talking about mohammed bin salman, who seized p

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here's she is speaking to cbs' scott pelley. >> facebook essentially amplifies the worst of human nature. >> it's one of the unfortunate consequences. no one at facebook is malevolent, but the incentives are misaligned. facebook makes more money when you consume more content. people enjoy engaging with things that elicit emotional reaction. and the more anger they get exposed to, the more they interact p. she'll testify before the senate subcommittee on consumer protection tomorrow. a facebook executive did testify last week before that same subcommittee defending facebook saying those graphs and charts you saw intended for internal use exaggerated the issues and were not scientific studies. >> very interesting. one to follow. thank you, scott. >>> shall we take a live look outside. san francisco's skyline following a pretty hot weekend. we may have some more heat in store for today. >> want to bring in meteorologist kari hall. she's tracking those temperatures for us. how are things looking for us? >> looking hazy out there. in that shot. by tomorrow the cooling begins and we're also go

haugen speaking to "60 minutes" scott pelley. >> as soon as the misinformation was over they turn tot off. >> reporter: facebook added a statement it has expressly disclosed to investors the risk remains of misinformation, hate speech and extremism occurring on its platforms. >> what happened between election day and january 6th on the platform? >> there were a lot of people who were angry, fearful. they spread the fears to more people and then, when they had to choose which content from the groups to put into people's new feeds, they picked the content most likely to engage us which happened to be angry, hateful content. imagine your scene every day the election was stolen, the election was stolen, at what point would you storm the capitol. >> reporter: internal scomentsup documents obtained from a congressional source shows in 20 1-9d a year after facebook changed its algorithm, researchers identified a problem, setting up a test account following former president trump, first lady and fox news, within a day the algorithm was recommending polarizing content. conspiracy theory recom

she is speaking with scott kelly -- pelley.it is optimizing for content that gets engagement and reaction. but the research is showing that the content that is hateful, divisive, polarizing, it's easier to inspire people to anger than other emotions. scott: misinformation, angry content is enticing to people and it keeps them on the platform. frances: facebook has realized they change the algorithm to be safer people spend less time on the site. they will make less money. scott: she says that facebook understood the danger to the 2020 election so it turned on safety systems to reduce misinformation. but many of those changes were temporary. frances: as soon as the election was over they turned them off or change the settings back to what they were to prioritize profit over safety. that feels like a betrayal of democracy. amy: that is frances haugen, testifying today on capitol hill on 60 minutes. jessica, you are ceo of free press, and a cofounder of the change the terms coalition, which disrupts online hate. whether we're talk

haugen speaking to "60 minutes" scott pelley. >> as soon as the election was over, they turn them backttings back what they were before to prioritize growth over safety. >> reporter: facebook disputes that and says it maintained necessary safeguards adding in a statement it has expressly disclosed to investors the risk remains of misinformation, hate speech and extremism occurring on its platforms. >> reporter: what happened between election day and january 6th on the platform? >> there were a lot of people who were angry, fearful. they spread the fears to more people and then, when they had to choose which content from the groups to put into people's new feeds, they picked the content most likely to engage with, which happened to be angry, hateful content. so, imagine you're seeing every day the election was stolen, the election was stolen, the election was stolen. at what point would you storm the capitol? >> reporter: internal company documents obtained from a congressional source show in ft changed its algorithm, to encourage engagement, its own researchers identified a problem. th

you can't get more different than me and scott pelley, for example, who came in and replaced me.nternally, in terms of the d.n.a. of that organization, they were just not that into me. and i remember going home and, like, my daughters were at the kitchen table, and, like-- it's really hard when you are just attacked relentlessly, day after day, and i'm pretty tough, but i'm human. and i started crying at the dinner tables. and my daughters, they were, like, 10 and 14. and they were-- they were so taken aback. and this was after jay had died. and i was a single mom. and they were like, "what's wrong?" and i was just like, "i'm having a really hard time." iand ca sai "reer what samantha said in 'sex in the city '." this is my 10-year-old. "if i listened to what every bitch in new york city said about me, i'd never leave the house." ( applause ). >> stephen: and with that, and with that, ladies and gentlemen, she's going there. it's available now. and she's katie couric. we'll be right back with a performance by gabby barrett. ♪ ♪ ♪ ( applause ) is. >> so i think what's significant

the story kicked into overdrive when the facebook whistleblower revealed her identity to cbs' scott pelleyhe version of facebook that's with us today is tearing society apart and causing ethnic violence around the world. howie: her testimony drew praise from republican and democratic senators alike. >> you are a 21st century american hero. >> thanks for coming forward and thanks for coming forward in the manner that you want todd have positive change. howie: most pundits are embracing her indictment of facebook. there is substantial suspicion on the right. >> there's a widespread understanding and particularly around the issue of kids that this is an extraordinarily harmful company. >> you think that this is any less pernicious than cigarettes? it's everywhere. it's everything. look at your kids. look at your life. >> facebook is faced with choices between getting more eyeballs on the platform, more time spent on the platform or protecting society. always chooses the eyeballs and the money. >> republicans may be walking straight into a trap. the left's real beef with facebook has nothing t

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