Dear Mark,

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

We call on you to choose transparency and allow an independent audit of your platform. To shut down all fake accounts, fund an army of fact-checkers big enough to stop the spread of lies, and notify users every time they are exposed to fake news, fake users, or disinformation campaigns.

Elections from the US to Brazil and India are just months away. 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'll make sure our governments do - and collectively #DeleteFacebook.

Sincerely, citizens from across the world