A bunch of abusive Reddit sub-fora (whose users had a way of spilling out across...

A bunch of abusive Reddit sub-fora (whose users had a way of spilling out across the general site and violating the site guidelines) were banned in the 2011–2015 timeframe. https://en.wikipedia.org/wiki/Controversial_Reddit_communiti...

But my impression is that being the central hub of one of the most aggressively hateful online pro-Donald-Trump communities in 2016 attracted a larger number of abusive users and increased the visibility of the problem.