I am reading "The American Slave Coast," which appears to be a well researched book on slavery in America. It provides a very unfavorable view of Jefferson. Although I am currently only 10% through the book, it attributes these things to Jefferson:
a) Support of the Virginia slave breeding economy where slave women are basically slave factories and continuously raped to provide this economic function. Jefferson's support for stoppage of slave imports from Africa was to provide higher value to this Virginia industry.
b) Jefferson repeatedly raped some of his female slaves. He had a slave concubine during his marriage which was a half-sister of his wife who looked very much like his wife. His wife was born of a free white woman. His concubine was born of a slave woman. Both women had the same father who raped the concubine's mother.
c) When a slave became old and not able to do his or her work Jefferson put the slave on half-rations so that this would accelerate that person's death and reduce the cost of keeping that person on the plantation.
For most of my life Jefferson was a hero of mine. His writings on science and religion I find very insightful. All this, from this current book I am reading, comes as a shock. However, I do know that one book doesn't make history.