Very few plantation owners were killed by slaves and none of them received the death penalty for owning slaves, so your fantasies must remain that.
My suggestion? Burn a copy of Gone with the Wind. Make yourself feel better and virtue signal to the rest of us.
But against the Sagar diatribe against the Southern leadership, consider Booker T. Washington's testimony, which attests to a very different reality. That Washington understood the subject clearly--having been born into a time when one could rely on personal witness--is as clear as is the irrationality of Mr. Sagar's consuming hatred.
One might also contrast Mr. Sagar's tone, with Lincoln's in his 2nd Inaugural Address: "With malice towards none," etc.
Mr. Sagar had no part in the War; but for some very, very bizarre reason, seems to have greater bitterness than the actual participants, over one of the issues. He reminds one of the psychotic haters of the period--John Brown & Thad Stephens. But they at least were consumed by hate of people with whom they disagreed on contemporary issues. Mr. Sagar is consumed with hatred against people who have been gone for generations; and seems to pant for the equivalent of the French Reign Of Terror, where the teenaged daughters of leading families went to the guillotine because of Sagar like hatred of their cultural heritage.