Can there please be a fallacy of class justice?

On the internet I have encountered this argument.

Group X is privileged compared to group Y
Therefore members X are sexist, racist, etc and members of group Y are not, by definition.

Another way to frame it...Because X are in power and Y are not, then X are racist and Y are not.

Yet another way to frame this is...Racism means the institutional racism of X against Y, therefore X can be racist and Ys cannot because Ys are not in power.