Mark Zuckerberg

In a joint hearing of the Senate Judiciary and Commerce Committees, at the Capitol Hill, Facebook CEO Mark Zuckerberg said that it was his mistake and that he's sorry.  Zuckerberg, who is testifying in the wake of Facebook's data breach scandal and Russian interference in the 2016 U.S. presidential election, said, "I started Facebook, I run it, and I'm responsible for what happens here."