No. Lee was mildly opposed to slavery at best.
“So far from engaging in a war to perpetuate slavery, I am rejoiced that slavery is abolished. I believe it will be greatly for the interests of the South. So fully am I satisfied of this, as regards Virginia especially, that I would cheerfully have lost all I have lost by the war, and have suffered all I have suffered, to have this object attained.”
“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.”
General Robert E Lee.
Lee freed his own slaves a good 10 years before the war began. Many of them continued to live with him long after the war ended & all slaves had been freed.
People on all sides try to frame that era according to modern times’ society, but it’s comparing apples & oranges. It’s sad & frustrating that people are so incurious, stubborn, self righteous, & willfully ignorant. Few people (it seems) can even fathom a time they haven’t experienced.
They should just stay out of it if they can’t do any better than that. (Sorry if that’s blunt.)
You are NOT an objective source.