Zuckerberg is also expected to be asked about Russia's use of USA social media during the 2016 elections - a subject of several congressional investigations and special counsel Robert Mueller's probe into Russian interference. "It was a big mistake". It was my mistake and I'm sorry for what happened. "Do you agree now that Facebook and other social media platforms are not neutral platforms but bear some responsibility for the content?"
"It will take some time to work through all the changes we need to make across the company".
Zuckerberg said he was now more confidant as his company has set the things right. Facebook has provided "powerful new tools" to users, "but it's clear now that we didn't do enough to prevent these tools for being used [for] harm as well", he said.
The financial success of the congressional hearing will no doubt fuel further criticism of the questioning Zuckerberg faced, during which the 33-year-old CEO spent most of the session explaining the basic principles of his social network, or referring questions to his team. The questions were, to be lenient, were overwhelming for the Facebook CEO.
"It's extraordinary to hold a joint committee hearing".
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The Facebok CEO said after the United States 2016 election, Facebook's top priority was to protect the integrity of other elections around the world. John Thune, the South Dakota Republican who chairs the Senate's commerce committee, said. "Then again, Facebook is extraordinary". Several weeks ago, media outlets reported that Cambridge Analytica, a data-mining company with ties to the Trump campaign and other Republican entities, had acquired from Facebook the private data of almost 100 million of the site's users.
Zuckerberg appeared momentarily amused, but the comment hits at an issue central to Facebook's data scandal: transparency. But privacy advocates charge that users' Facebook friends didn't get the same opportunity to opt into to having their information shared.
DD: "I think that may be what this is all about: your right to privacy, the limits of your right to privacy, and how much you give away in modern America in the name of 'connecting people around the world'". In his opening statement, he also apologised for his company's involvement in facilitating fake news and Russian interference in the elections. Zuckerberg, once press shy, also launched an apology tour as part of a rare media blitz.
How to watch Zuckerberg's hearings? Zuckerberg plans to be contrite in his appearances before lawmakers. Facebook's mission is to "help people connect".
"Even though some people don't like ads", he said, "people really don't like ads that aren't relevant". "He's a smart guy".