i get where you're coming from, but in this specific instance, a non-white user was reacting to some absolutely vile casual white supremacist posts. tactics, messaging, optics, whatever, not really the issue here. if some dummy white person saw that and got their feelings hurt because they're not a hitler lover, then i think some mockery is a perfectly reasonable way to help them either get over themselves or leave. they can get their degree in antiracism and basic social awareness on some other web forum.