Congress April 10, 2018 8:07 pm Key Moments From Zuckerberg's Testimony Facebook CEO Mark Zuckerberg spent over four hours answering questions from Congress on issues regarding privacy, hate speech and the company’s role in elections. Here are some key moments from the hearing. US & World Videos 3:32 Biden on campus protests: ‘Order must prevail' 24:50 @Issue: Biden signs the foreign aid bill, and a retrospective of Boston's 2024 Olympics bid 2:15 Opening statements made, witnesses called in hush money trial against Donald Trump 24:46 @Issue: Trump “hush money” trial underway 2:08 Boston announces first chief climate officer