You seem to have extracted the wrong conclusion from the post made because you are thinking in identitarian terms.
> The point is that some opinions are just wrong. This is like morality 101. You aren't entitled to kill folks, no matter how much you want to. And you aren't entitled to egg other folks on to kill folks either.
You are 100% right, some opinions are wrong. But the point is: who´s to judge which ones are right and which one are wrong? I assume that you, in your infinite wisdom, find yourself to be of such a high caliber that all of humanity should use what is obvious to you as the "gold standard"? You took your inherited moral values from your culture, and projected them as the natural and obvious conclusion we should all reach. Now if that isn´t arrogance, I don´t know what is. And I am not trying to be offensive here, this is what your comment indicates. And that is what you should have gathered from the previous comment.
The funny thing is, I agree with you completely here. Again, you and I would probably agree on 99% in terms of what we deem "moral" because both you and I have inherited the those values from our cultures. However, you are in a sense dictating that the moral values you inherited are infinitely more superior than all the others. I mean you are making deterministic statements about subjective issues while calling those who dare not agree "unreasonable" without considering for a second that other people that live in other parts of the world might have different views.
Let me put it in a different way: I am not defending group X´s right to say or do Y. No matter the group. I hate identity politics beyond belief. I am merely rejecting the notion that YOU are reasonable enough to make claim as to what people should or shouldn´t be able to say. Because just as you think yourself to be the wise and saintly moral crusader that you are, others think the same about themselves. Soon enough HN user "bjross" will be writing the exact opposite of what you are writing while claiming that he/she is the moral authority on the subject.
It isn´t that I am defending the evil doers; it´s that I am opposing your (proposed) evil which I think is far worse as it leads down a slippery slope like which the world have seen many times before.