So at any given moment, we're only allowed to criticize one thing - the worst thing in the entire world? After all, anything else is, you know, not that bad.
Laying off the hate is likely just good advice all the time.
I'm guessing this one. Although facebook didn't invite this violence directly, they were the primary tool of propaganda. Now I'm not saying it's easy to solve this problem but facebook seems to be actively overlooking these things as it has happened repeatedly.
Have you seen the rampant propaganda and manipulation of facts from social-media-driven left wing and right wing groups? It is far more inaccurate and vile.