well the American Nazi party in the past has collaborated with Nation of Islam
people forget that the American Nazi party actually endorsed Obama for two reasons one there were quite honest about it that Nazis were socialists and view Obama as fellow socialist
and the other thing is they considered Obama racially aware
these white supremacy want groups identity Politics as much as anybody else on the left ...it give them their own little fiefdom and find common ground with the radical left keeping agitation up
“well the American Nazi party in the past has collaborated with Nation of Islam”
And even further back the Klan and Marcus Garvey made alliance.
You make excellent points that all these groups are in fact left wing and share world views.
and the other thing is they considered Obama racially aware
I don't know if any party officially endorsed Obama, but leaders liked him because they thought Obama's election would provoke a White backlash. They also said thought he was "racially conscious" and that was a good thing. I don't see anything about socialism, but they hated McCain for his association with mass immigration and for being a "war-monger."