[username90]

Selective enforcement of laws is an old strategy to legally discriminate. It has been used many times to discriminate against blacks. What makes you think it can't be used to discriminate against other groups, like for example r/WallStreetBets?

Of course we can't say for sure. But at the same time we can't say for sure that specific policemen were actually racist when they attacked black people, or if they would do the same thing against white people in similar situation. You can find statistical patterns there, but similarly you can also find statistical patterns that certain groups on message boards gets banned for less than certain other groups.