When they're older, sure. But I don't need my daughter telling people that the president is a Nazi, for example, because she's not equipped to have that argument.

I mean she knows the president is a Nazi, but I told her not to talk about it with others and to generally not call people Nazis.

This led to her asking her mother, "What's that N Word that Daddy didn't want me to say again?"

Luckily she didn't ask that in public.

You could also challenge it "looking cool". Yes it's a matter of taste, but you could try and encourage decent taste in your kids.