He's saying "EVERYONE" has the right to speak up, but what he's disgusted with is the obvious bigotry and hate that everyone has to bring into their thoughts about a matter. Just because we don't agree with something doesn't make us right or wrong, but it does make it a point that we should learn to agree to disagree. And while you're there, sir or madam, perhaps you should remember that sarcasm is the tool of those not clever enough to have an intellectual, rational discussion. I wish you the best, sir.
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