What did either El Paso or Dayton have to do with ‘white supremacy?’ Neither guy as far as is known said anything about whites being ‘better’ than other people.
The closest the guy in el Paso came to discussing race ...at least in my quick skimming of his alleged dossier... Was he didn’t think races should mix because their children would be confused, but didn’t imply, as a racist would, that the kids would be defective or inferior or tainted, just that diversity would be lost if everyone became homogenized. That’s not ‘white separatism’ either, that’s separatism generally, applied to everyone. Not everyone is simplistic enough to be defined by a two party system.
Did the Dayton guy even have a manifesto? All I saw was a shirt that might be evidence he was skeptical of Christianity... Or was just a fan of an old mass murderer that seemed to be inspiration for the album the shirt logo advertised.
They shot people ergo, QED, and ipso facto they are white supremacists.