The claim I was making had nothing to do with Absolutism vs Relativism. It had everything to do with humility and empiricism. I'm saying people should experience the world more, and judge it less. Let the people around you be who they are without being required to label themselves. I can argue for that all I like without running afoul of the ol' Intolerance of Intolerance malarkey. See, I'm not saying criticism ought be outlawed. As a matter of fact, I'm saying rather the opposite. Be willing to consider criticism, and to address it, as I'm doing here. I don't have to stand by and let people impose their abuses on unfortunate bystanders because "Oh, helping would only be imposing
my views." You can have all the internal standards you want, provided they're not used as a crutch to absolve you of the necessity of thinking, as they become when people start promoting them to external Facts. The claim is not internally consistent because I permit everything, it's consistent because I permit things that aren't problems, and this doesn't seem to be a problem.
As for protected classes, that's any time you get social or legal protections built in to handle harm being done to some group. For example, and I apologize for bringing up race but it really is the primeval example, the United States forcibly integrated public schools some decades past. Doing so required the law to specifically address race, and to create laws that treated people differently based solely on that category. If they'd stood by the principle that the law must treat groups absolutely equally, it would only have served to perpetuate inequality and unfairness in actual fact (and, incidentally, it's not as though the job is done, but I don't want to elaborate too much on racism here).
For what it's worth, by the way, I have read
Invisible Man, although too long ago to remember much.