Tunnel vision always focuses on one aspect and ignore the whole. Black people certainly were not at the forefront of the abolition movement in the 1800's. And black people would not have succeeded in the abolition of segregation in the 1900's without a majority of white people joining that cause.
Honest people give credit where credit is due. Ideologues always look for a way to diminish the contributions of those they despise.
Blacks had no power, zero, nada. No one cared what they wanted or said. It was totally a movement pushed by whites. They were the only ones who had a voice. Blaks wanted freedom but most didn't even know what it really entailed. most had never been free. In fact when they first gained their freedom most suffered more initially then when they were slaves. Becasue now they were on their own and there was nothing for them. No education, no skills, no social standing. in reality it was like taking kids and tossing them into an adult world and expected to survive. Only they were also hated.
And it was whites who continued to push for improvement. Yes, when blacks finally started to get a voice of their own and stand up for themselves, they were the ones who physically suffered. But it was whites who again said enough and became the mouthpiece for change.
Wrongs aren't always righted over night. it takes time to make radical change. but it also takes people in a position to make change to move the needle even slightly.