@LasMa. The message from the campus police was very broad. That’s the point. It did not just focus on bad words that white people are not allowed to use. It said that saying hurtful things could lead to being disciplined. That is an unacceptably broad policy. As maya54 points out, it sounds unconstitutional.
However, maybe they were really were just trying to scare students into not saying “hurtful” things? Probably. Still, the message was kind of ridiculous.
I’m very down on mean people of all kinds, no matter what race they are. “Hurtful” is not limited by race. Lots of people can suffer great pain as the result of callous, cruel mocking words used by their peers or others. But this is not something for the authorities. To suggest that students call the campus police if they hear “hurtful words” is quite frankly absurd.