Not really a desire to learn more but I've come to understand that in a lot of ways white supremasists/"nationalists" and religious radicals/jihadists are kindred spirits. They're basically the different sides of the exact same coin.
It's largely awkward men who aren't really the "winners" in life who are easily indoctrinated because such a movement suddenly not only makes them feel like they belong. Suddenly they get a rush of "power" when they are pushed an identity that they are actually part of an "elite" group and everyone else is beneath them. It's very attractive to a guy who's going nowhere in life, didn't get laid much in high school, didn't have many friends, etc. etc. etc.
I think largely speaking that is the recruiting base by and large for both groups. The ideology is almost in some cases a secondary thing, the feeling of "belonging" is a powerful draw to a person, particularily men for whatever reason, that don't fit into societal social groups very well otherwise. For men I think for whatever reason, belonging to a social group/peer group is extremely important to self worth. When you don't have it there is a deep-seated feeling of frustration and shame I think for whatever reason.
The irony is these two groups would hate each other, but on a personal level, a lot of these guys are mirror images of each other, they just happened to be born in a different part on the map and got indoctinated into that designated group.
