There are two types of people that use slurs to talk about other folk.

The first group is made up of folk who don't give a fuck if they're hurting others.

The second group is made up of folk who don't realise the slur is a slur or don't understand why the slur is harmful.

The second group appreciates being informed about the consequences of their words so they can change course.

People in the first group that are pretending they're in the second group get angry when called out. But they were always the first group.