> 4) Communities themselves can be hostile, especially when the majority adopt black and white thinking. many of these communities will inevitably fall into th

> 4) Communities themselves can be hostile, especially when the majority adopt black and white thinking. many of these communities will inevitably fall into that thinking, even when they start out as a more open forum, due to selection bias, us-vs-them / in-group-out-group, and a tendency for more controversial, angry, or loud posts to get more views.