https://www.cnet.com/news/facebook-handing-off-editorial-oversight-to-independent-board-in-2019/

Zuckerberg also said the company has to wade through questions about the limits of what users should be able to express, who decides policies and makes enforcement decisions, and who holds those people accountable.

"As with many of the biggest challenges we face, there isn't broad agreement on the right approach, and thoughtful people come to very different conclusions on what are acceptable tradeoffs," Zuckerberg wrote.