Gender is fluid, but race isn't. Race has no basis in biology but is invincibly exclusive. Gender also has no basis in biology, but must freely admit converts. #Logic
The term racism belongs to a class of expressions whose purpose is to be a conduit for social hegemony, rather than to convey meaning. Indeed, as the language is larded with similar totalitarian patois and circumlocutions for verboten ideas, it becomes increasingly difficult to express an unapproved thought, or, what's more, to think in ways that do not lead to self-contradiction. It is, as Orwell wrote, the objective of linguistic manipulation to make unauthorized thought impossible, since there are no terms in which to express it.