Am I wrong for wanting to cut them off?

I’ve already posted on this app about my extremely racist, self-hating, Afro-Hispanic family. My aunt and her daughter have called my fiancé a monkey. They have called my future kids monkeys. They said not to bring my kids around them. They said that black people have bad hair. They stink. They’re stupid. They’re criminals. The police needs to kill them all, etc. Aside from being ignorant and proud, they have NEVER been there for me. They have NEVER tried to have a relationship with me.

My mother says to ignore them. She said that I shouldn’t give it any importance and that I should take it as a joke? She says that I should be GRATEFUL because we lived with my aunt for about two years... 17 YEARS AGO because my mother was homeless. She also said I should leave it up to God like she does. She keeps saying that if I’m so hung up over it than I must believe it’s true. My mother is so far up their ass, it’s unbelievable. They don’t even really like her but she tries so damn hard to be apart of that disgusting family. It’s like my aunt and her kids run the whole family, like they’re the most important people.

Am I wrong for wanting to cut them off completely? She says that she won’t stop talking to them and that IM being very immature for wanting to cut them off. I don’t wish bad on them but no way do I ever want to be around them or speak to them again!