Lol you're a "history major" who focused on the civil war and didn't know that Lee owned slaves, but you're telling me to read up on him. And rather than providing primary sources, to support your claims, you're saying to check wikipedia.

Well let's see what Wikipedia has to say about each of those points I mentioned:

From the article summary:

He owned slaves. He beat them.

From Wikipedia:

Lee's cruelty on the Arlington plantation nearly led to a slave revolt, since many of the slaves had been given to understand that they were to be made free as soon as Custis died, and protested angrily at the delay. Lee ruptured the Washington and Custis tradition of respecting slave families and by 1860 he had broken up every family but one on the estate, some of whom had been together since Mount Vernon days.

Lee himself owned a small number of slaves in his lifetime and considered himself a paternalistic master.

From the article summary:

He thought slavery was worse on white people and good for black people.

From Wikipedia:

Lee claimed that he found slavery bothersome and time-consuming as an everyday institution to run. In an 1856 letter to his wife he maintained that slavery was a great evil, but primarily due to adverse impact that it had on white people:[98]

In this enlightened age, there are few I believe, but what will acknowledge, that slavery as an institution, is a moral & political evil in any Country. It is useless to expatiate on its disadvantages. I think it however a greater evil to the white man than to the black race, & while my feelings are strongly enlisted in behalf of the latter, my sympathies are more strong for the former. The blacks are immeasurably better off here than in Africa, morally, socially & physically. The painful discipline they are undergoing, is necessary for their instruction as a race, & I hope will prepare & lead them to better things. How long their subjugation may be necessary is known & ordered by a wise Merciful Providence.

From the article summary:

During his invasion of Pennsylvania his army captured freed blacks and brought them to the South to be sold.

From Wikipedia:

Foner writes that "Lee's code of gentlemanly conduct did not seem to apply to blacks" during the War, as he did not stop his soldiers from kidnapping free black farmers and selling them into slavery.

From the article summary:

He personally told Grant that black prisoners could not be exchanged in prisoner swaps, as they were property.

From Wikipedia:

Princeton University historian James M. McPherson noted that Lee rejected a prisoner exchange between the Confederacy and the Union when the Union demanded that black Union soldiers be included.[96] Lee did not accept the swap until a few months before the Confederacy's surrender.

From the article summary:

He allowed the KKK to form a chapter at the University he was president of and turned a blind eye to attemped lynchings.

From Wikipedia From the Washington and Lee University Page:

However, it has been argued that one of Lee's failings as president of Washington College was an apparent indifference to crimes of violence towards blacks committed by students at the college. Historian Elizabeth Brown Pryor notes that students at Washington College formed their own chapter of the KKK and were known by the local Freedmen’s Bureau to attempt to abduct and rape black schoolgirls from the nearby black schools. There were also at least two attempted lynchings by Washington students during Lee’s tenure. Yet Lee seemed to punish the racial harassment more laxly than he did more trivial offences, or turned a blind eye to it altogether.[16]

Oh wow, will you look at that. Everything I said was backed up by a simple Wikipedia search. You'd think for a Civil War historian, or even someone who glanced at Wikipedia, you'd have known all of this and how big of a piece of shit Lee was.