I dunno. Are they separatists or supremacists, or maybe neither? I’m not sure a racial separatist movement would qualify as a classic hate group.
It’s not as if I — mostly White, 1/16 Native American/First Nation/Amerindian/Whatever — am being forced to attend that particular church.
They are just "pro" worship of their Gods and their Ancestors. They actually approve of others worshiping their own ancestral religions.
They existed long before the neo-pagan revival attempts in the wake of The Craft movie and had some rather harsh things to say about the more recent Vikings TV show on the History channel.
I have not yet met anyone who claims to be a member though, nor am I affiliated with them.