Slurs transcend capitalism. Racism persists in socialism, and it fades alongside slur use. Slurs should be opposed, rejecting them doesn't affirm them. Explain how this is idealism, dialectical materialism acknowledges language, art, culture, laws, and other social constructions. Classes are also social constructions, that doesn't make them super-natural, but rather are affirmed by how we interact, produce, distribute, and live. Where are you getting the idea that this is idealist from?

Secondly, alluding to me being racist because I oppose people using slurs is deeply unserious.