I wonder if it's possible to have a well informed, polite, nuanced, and empathetic debate on this, that recognizes the complexity of the situation, existing grievances, and existing hurt.
Given the level of comments you always read on contentious subjects like this one, it's almost impossible on the internet. People have gotten so used to being rude to each other, shouting at each other, not actually listening, the kind of behaviour that would get you punched in the face in real life.
Except now people are taking this style of 'debate' to the real world. People screaming at each other without listening. What's the point? Is it fun? Does it convince anyone? Does it actually solve anything?
Maybe it helps alienated people feel like they belong. Perhaps that's the attraction, even if it means you end up becoming increasingly radicalised and ultimately even more alienated from your actual friends, family and neighbours.