The left constantly tries to control the terms, language, and parameters of the debate.
They try to make certain words off-limits to their opposition, while they retain the right to use any words they like, no matter how offensive or inappropriate.
They try to declare certain speakers, or sources, illegitimate, while they pick and choose any sources they like, even if those sources object (or would object if they were alive) to being so used.
Not just the left. I got banned from a supposedly conservative blogsite for posting the term “nigga gangbanger”. Used it accurately, I might add.
The tentacles of the Thought Police are everywhere, comrade.
(Yes, yes I know these sites have a reputation to maintain...)