> The current de rigueur is for society to realize that our unjust treatment of a special group is unfair. In the 60s, it was our unfair treatment of blacks. In the 90s, it was our unfair treatment of gays. Then we work to get them declared as a protected class, and then we fight for their rights using that protected status as leverage.

> Instead, we should do a better job of understanding what rights entitle us to, and then simply afford those rights to all people

Yeah, I don't think you understand the process you refer to in the preceding paragraph represents -- it represents an evolving understanding of what rights people should have (note that this is an evolving social consensus, not an evolving understanding of something which exists as an external material fact), followed by corrective efforts to address manners in which the status quo situation differs from the evolving social consensus of the desired situation. The entire idea of a "protected class" is that it is one which has in recent history been actively discrimated against in a manner which violates the current social norm, such that there is a heightened presumption that acts which have a disparate impact on that class are invalid as discrimination on that basis rather than simply incidental impacts of some permissible distinction. It is part of a process aimed at realizing and securing the new understanding of "what rights entitle us to" by eradicating residual practices that were accepted under a previous, more limited understanding.

Particularly, its important to understand that one issue is that our general understanding of what our rights entitle us to include that they generally do entitle us to discriminate according to our own personal biases, where that doesn't cause unwarranted social harm -- but the understanding of what causes unwarranted social harm is evolving.