Funny... I have this from an independent source. Point is that when the Republicans freed the slaves their total vision was more leftist than the Democrat party ever was. Plus what goes for the bad things, also goes for the good things. The good things the Republicans did in the past do not justify their bad actions today. So being beyond racist, threatening world peace today, unlawfully trying to make people pay for a wall they don't want, and trying to turn facts into lies is NOT justified by the fact that some people in the past ended slavery, no matter which party they belonged to.
That is the power of the individual, and therefore also the responsibility of the individual. One of the core essences of the American Dream, and it's odd that *I* must tell you that. You can also not praise me for the deeds of my grandfather, not can you condemn me for his faults. In the same manner I can judge neither the Republican party nor the Democrat party for their deeds today.
Like I said, you don't have a good reason to hate the Democrat party today, so you seek your reasons in the past, which no longer applies to the Democrat party as it functions today.
Oh, and I wonder if you can understand the full essence of slavery, it's pros, its cons, and how it actually functioned at all, and what the aftermath of abolishing it brought. Slavery is a very complex subject, after all.