Shares in the social-networking platform plummeted by as much as 24 percent on Wednesday.
“I personally find Holocaust denial deeply offensive," Zuckerberg stressed.
The president's eldest son attributed the decline in new followers to a disclaimer he said appeared when a friend searched for him on the app. That disclaimer did not appear when Newsweek searched for Trump, Jr.'s name on multiple devices.
The Trump-supporting sisters claim the social network is censoring their content.
Senator Dean Heller: "Do you believe you’re more responsible with millions of Americans’ personal data than the federal government would be?" (Long pause) Mark Zuckerberg: "Yes."
Activists and human rights advocates want answers from Facebook.
The project was put on hold after the Cambridge Analytica data-sharing scandal broke.
Christopher Wylie told lawmakers Dan Mursean had died amid rumors he had been poisoned.
"This was a breach of trust, and I'm sorry we didn't do more at the time," the statement signed by Zuckerberg read.
The tech giant is now worth $72.4 billion.
Parker said the site created a "social-validation feedback loop ... exactly the kind of thing that a hacker like myself would come up with."
The social media giant has outdone market expectations and advertisers keep lining up despite Russian propaganda ads controversy.
Facebook users labeled Zuckerberg a “heartless billionaire” after he appeared as a virtual reality cartoon on the hurricane-hit island.
A pro-immigration advocacy group is trying to save DACA so some undocumented individuals who entered the country before the age of 16 could remain in the U.S.
The Facebook founder said that Lola Omolola’s FIN group had created a “no-judgement space” for more than 1 million women to interact.
Zuckerberg spoke at the school he dropped out of to start social network.
If you bet $100 on Kim Kardashian and she somehow wins the presidency in 2020, you'd make a cool $55,000.