You mentioned [Andrew] Anglin earlier. He's a crypto.
I suspect Anglin to be an elaborate, long time FBI plant to encourage white, nationalist men to reveal their beliefs, thus, get put on an FBI (or other alphabet agency) national registry.
Anglin looks like a mongrel. He appears to have some sub-Saharan African facial features.
Also, if you look closely, the leaders and organizers of most "white supremacist" rallies, or other clown shows, usually look like Jews and light-skinned mongrels.
Anglin is not a fully white. Look at his features:

