"Durrr hurr durr we can slander white people because they aren't totally discriminated against"
Do you know how uneducated you sound?
the point isn't that it's nice or anything, but there's nothing wrong with it
nothing's ever going to happen as a result of that
white people will always be allowed to marry white people, they will always be allowed to vote, they won't get turned down for jobs, etc.
so there's not actually any big issue with racism against white people
I don't really get how being rude to someone because they're white or straight or cis helps you feel better about the discrimination against you. if it does, that's a moderately serious issue
you have, because it is in fact revenge, which is morally wrong