[AnimalMuppet]

True. But chipsy has a point too, because "post-structural theory"/feminism/"social justice" seems to go verbally nuclear more readily than other movements do.

I think it comes from post-structuralism. Words lose their meaning in post-structuralism. All discourse is about power, not truth, because truth is not possible to determine, even in principle. So these people are not interested in having a reasonable conversation. They don't think it's even possible to have one. They're interested in winning the battle of words, and only that, because they think that that's what all conversation is.