How often are black cops gunning down white people for simply being white? Ask them to state specific examples of black cops gunning down white people. If they can actually provide examples then ask them how quickly were those officers fired, arrested, etc. If they can’t provide any examples tell them to stfu because they’re bringing up an issue (?) that they don’t even care about/have any knowledge on.
(Note: Any examples they provide should include names, cities, years, etc. not “that kid in (insert city here) who got shot a few years ago”)