Facebook usage is falling in the US and Canada, especially among young people, but it's still dominating the internet overseas, especially in countries where Zero Rating is legal. In those countries, Facebook -- more than any other technology, platform or service -- is leading the rise in authoritarianism and genocide. It's become the go-to tool for manipulating public opinion to support violence, racial cleansing and other horrors. In his latest piece, John Oliver describes how Facebook's business model, moderation tactics, and history have led to this moment -- and how Facebook has become an irredeemable cesspool, an insult to toilets, because toilets "make shit go away, whereas Facebook retains shit, disseminates shit to your acquaintances, and reminds you of shit from seven years ago while allowing corporations to put their shit in front of you.