The whole point of this is that there is proof that both the FBI and DHS have determined that white supremacy is the greatest domestic threat.
Combine that with the fact that, although not all tRUMPf supporters are racist, all racists are tRUMPf supporters. ALL the white supremacist groups identify themselves as tRUMPf supporters and even contribute to his campaign. So you can nit-pick all you want. It won't change these facts.