Facebook Leader Inc. Mark Zuckerberg, on Tuesday local time, testified before the United States Congress. This is related to the scandal of personal data that wrapped around her social media network.
The 33-year-old Internet fighter faces several fierce questions in a hearing with the US Senate Commerce and Courts committee.
John Thune, chairman of the US Senate Commerce, Science and Transport committee, opened the session in a loud tone.
A few hours before the trial, people waited in line at the Senate Hart House Building along the courtroom in the hallway. Some of them carry folding chairs while others stand or sit on the floor.
Outside the congress, Avaaz's group of online protesters lined up 100 Zuckerberg picture clippings as big as his body, wearing T-shirts bearing the words "Fix Facebook".
Zuckerberg, who founded Facebook from his dorm room at Harvard University in 2004, is struggling to prove to his critics that he is the right person to continue to lead the company, which has grown to become one of the largest in the world.
Facebook is facing an increasing crisis of confidence among its users, advertisers, employees and investors, after admitting that personal data are 87 million people, most of whom live in the United States.
Cambridge Analytica is a political consulting firm, one of whose clients is the US Presidential election campaign team Donald Trump.
On Friday, Zuckerberg expressed support for the proposed law to require social media pages to disclose the identity of the buyers of the political campaign ad space in their network.
Facebook shares rose 2.5 percent in afternoon trade.