Dear Mark,

Sorry is not enough. Fix Facebook, or we're out.

We call on you to shut down all fake accounts on Facebook, hire an army of fact-checkers to stop the spread of lies, and inform all users who've seen or shared fake news.

Your motto at Facebook used to be Move Fast and Break Things. Now you need to Move Fast and Fix Things. If you don't, we will make sure our governments do - and collectively #DeleteFacebook.

Sincerely, citizens from across the world