Does being a minority make it OK? Nope, it doesn't. You can't compare that to Nazis who were majority groups discriminating against a minority.
I don't think it makes any difference. Racial terrorism is the same whether done by a majority or a minority because it leads to the same thing -- racial groups at each other's throat. When Al Sharpton incites arson that is no different than a bunch of Nazi brown-shirts doing the same thing.