I wouldn’t read too much into facebook friends. Real friends, who knows? It’s not unheard of for people to develop racist beliefs (and I’m talking about actual racist beliefs - “kill all _____ people” stuff, not the “you can’t say that, that’s racist!” garbage the left tries to peddle) despite having pre-existing black/etc. friends. Again, who knows? I suspect we’ll find out more as this guy is questioned...
No different than that guy that shot all those kids at that elementary school.