Why did African Americans shift away from thier long tradition of supporting the Republican party

FDR and the New Deal. A chicken in every pot. He promised that he would end the depression and started what we call today the socialist march on Washington. It fooled an entire generation. Have no fear, they are learning the errors of their ways, and finally understand that anything free is just a way of saying you will pay for it later. I give you social security as a fine FDR example. I give you the Rural Electric Administration ... hey do you have a light bill? I thought the government was going to provide electricity in every home ... oh it's there all right, but who gets the check, the people who paid for the power lines or Edison and friends ...