As a black guy I always figured these types of hate groups were for the biggest white trash loser type white people who couldn't succeed despite the fact that they basically have most societal advantages in their favor. So they blame minorities or other ethnic groups for their failures..
The guy who does my yard is white, he seems like the type that might be a KKK or neo-nazi guy, joining a "white power group" mad because he works for blacks...but really who cares, I could get another black or a mexican but they all have issues of their own,,,so it just comes down to who does the best job for the best price,,,
In any event, for all the confused american white people who think they are republican, or whites who empathize with the KKK because they like the sound of a "white male agenda", always remember that todays' republican leadership is fascist, which is very different from just racist. Fascists utilize racism as a divide and conquer method to further their goals, but they have no allegiance to race or ethnicity, only power.
As for the white europeans who may empathize with fascists, know that during the time of the Hitler death camps in fascist Nazi Germany, at least 5 million of the 11 million estimated to be killed were not jewish.
http://www.holocaustforgotten.com/non-jewishvictims.htm. Anybody of any race or ethnicity, including Aryan, who they deemed to be a threat or just didn't like, for any reason whatsoever, were jailed, disenfranchised and exterminated.