Jefferson was like the original liberal.
Have you ever read the Mayflower Compact? And understood it?
Most of those who signed the Declaration did not support slavery. But they'd agreed they needed unanimous approval of the document. So they excluded language opposing slavery because the southerners threatened to leave if it stayed. We fought a whole civil war primarily over the issue. And the abolitionists were primarily Christians, though certainly not exclusively.
There are millions of people now, who support the murder of babies in America. This despite technology that shows just how human they are at an early stage of life in the womb. I'm not here to argue the good or bad of abortion, though I surely oppose it strongly. But my point is, that at this point in time, dismembering those children, with excruciating pain, is approved by many in our society. In 100 years, will the accomplishments of those who think abortion is okay, be diminished because of their support for what is commonly accepted now? I mean if abortion is viewed in the future for it's barbarism, as I believe it will.
I'd recommend the easy to acquire movie Amazing Grace, about the efforts of William Wilberforce to have the slave trade abolished in England. There were other forces at work. Just because someone supported what was commonly accepted 250 years or more ago, doesn't necessarily offset their other accomplishments. I say that, though my view has been for 45 years that slavery is America's greatest evil, and we still today bear the scars and ramifications of that more than 150 years after the emancipation proclamation.
It's a complicated issue in so many ways.