This is not a Freedom of Speech issue. Facebook is not government and we don’t have any speech rights there. Facebook should have banned this from the start.
They were obviously nuts. That doesn’t excuse the ganging up that took place. In fact, those who seek out mentally instable people for entertainment value are not fit to lick the mud off of the bottom of my boot. It is easy to only see bits and forget the other side of those bits are people. Remember humanity.