Probably FDR. Certainly not LBJ, as he only supported the CRA and VRA for political expediency.
You're just like a broken vinyl, aren't you?
If LBJ supported something due to political expediency, it were his Southern colleagues when he was a Senator. I mean, he was from Texas, which wouldn't elect an all-out integrationist.
I've read many sources stating LBJ was rather personally sensitive to the plights of minorities. He did not grew up in a racist home (his father, a state legislation, was fighting with the KKK machine).
The funniest part, even if we assume he supported the CRA and VRA for political expediency, he still did more for the Afircan American's rights than any Republican President post-Grant.
You love to talk about how much you care about Blacks, so maybe you should give him a little credit, you little hack?