How was the african american community s entry onto the political scene a success?

It was a culmination of a century long struggle since the emancipation proclamation

The reconstructions effort did not envisage the political plight of African-Americans in southern states especially after the compromise of 1877. This resulted to a century old struggle with segregation, and inequality which ended in the 1960's after the signing of  the equal voting rights act.

That really sucks, but i don't know who your leader is, and i don't want to write that much