Why is it racist to refer to black men in a derogatory name but it is not racist to refer to white men in a derogatory such as incel, wimp, or simp?

Why is it racist to refer to black men in a derogatory name but it is not racist to refer to white men in a derogatory such as incel, wimp, or simp?
Why is it racist to refer to black men in a derogatory name but it is not racist to refer to white men in a derogatory such as incel, wimp, or simp?
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