But would it really be hard to have checks for that kind of groups automatically? How can Facebook read all of my private chat message, find out what the conve

But would it really be hard to have checks for that kind of groups automatically? How can Facebook read all of my private chat message, find out what the conversation was about and serve me accurate ads, but can't find out that this group called "death to all jew" is hate speech? Oh wait, the first case brings in money and the second simply makes the world a better place.