Shout them down in every space, make them embarrased to think the stupid shit they think.
If we don't embarrass and correct them now we will have to kill them later when they come for our friends and families.
Kind of yes, although their music didn't have anything to do it, and their "white supremacism" didn't go much beyond "but can that n----- play the guitar?", confederate flags, and Phil Anselmo's "edgy humor". Some of it was actually overplayed, because Dimebag didn't play his guitar 100% aligned to perfect rythm, and djent kids didn't like that. Metallica is more aware its own right wingedness in its music.