"It should, however, already be clear that the building of an independent force is necessary; that Black Power is necessary. If we do not learn from history, we are doomed to repeat it, and that is precisely the lesson of the Reconstruction era. Black people were allowed to register, to vote and to participate in politics, because it was to the advantage of powerful white “allies” to permit this. But at all times such advances flowed from white decisions. That era of black participation in politics was ended by another set of white decisions. There was no powerful independent political base in the southern black community to challenge the curtailment of political rights. At this point in the struggle, black people have no assurance—save a kind of idiot optimism and faith in a society whose history is one of racism— that if it became necessary, even the painfully limited gains thrown to the by the Congress would not be revoked as soon as a shift in political sentiments occurs."
January 1, 1970
https://en.wikiquote.org/wiki/Reconstruction_era