By some accounts, almost three out of four signers of the Declaration of Independence were slaveholders.
One recognized history expert had this to say about the founders of our nation: “In 1776 all Southern and half of the Northern Founders were slaveholders.”
I think you need to walk back your angry talk about the founders of our country, especially the derogatory claim that as slaveowners 73 percent of them “have always been all about the Big Lie — it's how they make their livings. They are kindred souls, brothers in arms against the truth. Only the lies change, the liars are all the same.”
The key point which distinguishes our Founders in 1776 from slaveholders in, say, 1860 is that in 1776 virtually all recognized slavery as an evil imposed by the Brits which should be gradually abolished.
By 1787 slavery was being abolished, including by Southern leaders like Thomas Jefferson (i.e., Northwest Territories).
But by 1860 Democrats denied that slavery was anything but virtuous and claimed it should never be infringed, even in US territories.