If you judge the people of the 19th century by the standards of the 21st century you will get very distorted view of history.
Your wrong. There were people, a minority to be sure, that believed that blacks were just as intelleigent and capable as whites. There was a bigger minority than that believed that they deserved the same freedom as any white man. Abraham Lincoln was one of those people. I think its a shame that more didnt feel that way.
As far as your juvenile attacks on a great American President, I think you would find people more agreeable to your views in the Antifa Or Black Lives Matter crowd.