One reason "white supremacists" end up congregating in the various chans is because they've been banished from everywhere else. In the US, the overton window has shrank dramatically in the last decade and it keeps on shrinking.

More to the point, it is my view that events many will see as extreme will keep on happening regardless of which way we choose to go. Today, we are not dealing with increased discussion and development of new ideas (printing press). The feedback loops are getting short enough to give rise to cognitive metasystems. It follows that some blowback will occur. We are watching force projection/meatspace interaction from cognitively dissonant emergent hive minds. This is exactly what bottom-up reorganization looks like. Expect it to intensify.

You do realise that 4/8chans are full of trolls, right? They post offensive stuff to offend people like you, who take them seriously.