That he later allowed himself to be used as a puppet of the race-baiting, black-hating, left doesn't undo the great good that he did in the 60s.
Can you provide some specific examples?
He voted against block grants for federal education funding because it might be used for private schools. He was a staunch supporter of the school system that is hugely responsible for crime and poverty in urban America, including black people. Charter schools and school choice would do more to elevate the living standards in poor black neighborhoods than just about anything government could do - and, yet, civil rights leader John Lewis was against it. Not that he, deep in his heart, wanted to harm black people as does the racist Democratic Party, but he allowed himself to be suckered in - choosing the reward of Democratic Party support for his continued election over what was actually best for the black community.
He supported completely open borders - a policy that, by design or by accident, keeps black Americans on the democratic plantation, and gives entry level jobs to illegal immigrants. Same thing: open borders are bad for America and bad for Black Americans. But John Lewis ignored that to support the Democratic Plantation agenda. John Lewis was a house slave to the Democratic National Committee.
It is a shame because he started out so great. I think we need to honor the great things he did and, just like in others, overlook the bad. I'm all for a statue for him - maybe right next to one for Lincoln, Jackson, Washington, Jefferson. He definitely deserves a place in Trump's Honor Garden.