Let us discard all this quibbling about this man and the other man, this race and that race and the other race being inferior and therefore they must be placed in an inferior position. Let us discard all these things, and unite as one people throughout this land, until we shall once more stand up declaring that all men are created equal. — 1858

My Take – Generalizing about a group and how they should fit in some arbitrary social order forgets that human beings are individuals, capable of a myriad of talents and accomplishments.  We are not equal in outcomes, but we are all equal in our rights.  Saying that a group of people are inferior just because of their skin, religion, or whatever dehumanizes the bigot more than it does the maligned group.