One heck of a good question, One hell of a diabolical answer!

Let's take a trip,
Back in time shall we? The Civil War (1861-1865). There were a few reason's that war was fought. The most popular being slavery. Every one knows this one, The "north" vs "south", "union" vs "Confederacy". And we all know the outcome. But it is rare that you hear anyone talk about after the war. Ulysses S. Grant was the president, and the war was over. Grant was elected President as a Republican. I'm guessing we all know who Grant was before being elected President? Let's refresh, He was the hero general for the "north" the "union". You know the story, Lee vs Grant. Although the war was over, And newly freed slaves were now citizens (not property) and allowed to vote, The southern states were not happy. Because of the new black vote their states were now with newly elected republican representatives. The Democratic party, The "south" or "confederacy" was angry! Grant new this, and was trying to defuse the situation before more bloodshed. But that was impossible.
The lynching started, And the cross burning, And then....... The birth of the Ku Klux Klan!
Yes, The Ku Klux Klan! The "KKK" now was the terrorist militia for the democratic party.
And it was extremely violent. with the help of the "KKK", the democrats through violence and bloodshed would attempt to overthrow the new Republican government in their states.
with no such success, at least not for long anyway.
That's a pretty dark past for the party that "labors for equal rights"! And the advancement of African Americans.
In the 1920's the Republican party often tried to pass anti lynching laws, That democrats would reject every time
Now, It wasn't until F.D.R. came up with the new deal that the democratic party was able to pry the black vote from the republican party. Promising more equality, And more opportunity.
But by giving them their votes they were now democrats by design!
Fighting for their future the democrats are?
They fought, And lied for their votes!
What is the biggest obstacle between an individual and success, And equality?
Skin color? Poverty? No. It is education! By Pretending to fight for the rights of African Americans The democratic party has successfully secured a dependant people on their kind of government. The government of need!
You see, By being the party that depends on dependant's, They have secured a fairly large number of votes. And where one minority looks for salvation, the other's follow.
They have created an environment that works perfectly in their favor. where there is a community in need, they are needed. That is why my friends, I believe the Democratic/Liberal party keeps the African Americans needing! Yes they "fight for their rights", Like affirmative action, As if they wouldn't be able to compete with whites on their own, with the same exact education. Good plan right? No, you don't need that education, "WE" will help you get a job, "WE" will help you get food, "WE" will help you get whatever you need, As long as you vote for us (demolibs). I like that, Demolibs... That's what i will call them from now on.
So The question is, Why don't they see through the smoke?
Why would people vote for a party with this kind of past?
I'm guessing that they don't know the past. Most of them anyway, And I wonder why that is!