Not that I don’t agree with the general sentiment, or want to condone slave-owning in any way, but Thomas Jefferson only had children with one of his slaves, and from the historical record it appears to have been a consensual romantic relationship, insofar as one can have one with such a vast power difference (you cannot, really). He did oppose slavery privately, however he owned slaves, himself. Although, again from the record, it appears that they were more a part of his household, and treated (relatively) well, rather than how we typically imagine slaves in the South. Again, still not right, but compared to his contemporaries, you would call Jefferson a good owner. Still fucked up to say. A further disappointing fact is that, despite the fact that he deemed slavery reprehensible, he also deemed it to be political suicide to try to change the status quo. He brought the issue up a few times during his very long political career, but quickly abandoned the efforts. Additionally troubling is that, like many other in opposition to slavery at the time, he thought the solution was to ship black people to an island in the Caribbean so that they could form their own nation. This was not an uncommon opinion during that era – I believe even Lincoln bought into this “solution,” at one point. Also fucked up, but somehow better than the at-the-time alternative of continuing slavery.
Anyways, I don’t mean to undermine your point that many of the individuals who established this country did so with the idea that black and brown people, women, and the lower-class, were less-than, and established it in such a way that made it difficult or impossible for them to participate. However, I think your specific examples aren’t super accurate, and since I just read a pretty fair biography of Jefferson recently called Jefferson: Architect of American Liberty by John B Boles, I figured I would chime in. Really interesting and very much puts a great (in terms of historical stature) and flawed (in terms of our modern sense of morals) man in the context of his time and place.