What sorts of misconceptions and conflicts stemmed from the statement all men are created equal?

Humans are very fond of labeling things: Men! who are men? To the founding Fathers; Caucasion Land-owning Gentry, 1st class: Wives and daughters of 1st class, 2nd class; Spanish greasers; 3rd class; African negrows, slave class; The people Columbus named Indians. Terrorist class, you had to fear them, they wanted their lands back!