Right. It is pointless to point out the character is black or bring diversity into at all. Because it has no impact on anything about the character and you've admitted that you don't care about the topic if you like a show.
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How is that the opposite of stopping a discussion when you are telling people not to question certain people's views. Again that is telling certain people to stop. If everyone can freely have different opinions then there was no need for you to question another persons opinion and ask why it was a problem, right? You keep contradicting yourself.