You’re wrong. The Declaration of independence states that all men were created equal.
1- that means there is a creator, hence a religious vision behind that excludes all those who do not believe in that creator.
2- by man it was meant in 1776: white free men and it excluded women, non-white individuals who were not humans, like wild Indians and Black slaves, and non-free white men.
3- the ideal you are speaking of is a progressive rewriting of the READING of this sentence and free meant at the time those who were landowners (including planters), were the owners of some real estate, had an independent industry or artisan-shop or commerce: most white men were not part of this understanding and quite a few whites were indentured workers, hence non-free.
4- In our world today we are now fighting for accepted and all-inclusive diversity, which means equal BEYOND our differences and IN our differences. We are equal because we are different, otherwise we would just be the same humdrum clone-like set of androids.