after the civil war, mass imagery of black people destitute, systematically excluded from civic participation, being killed by cops and found hung from trees by vigilante whites funded and supported by confederate capital and local police, didn’t force an immediate moral/political awakening.
it wasn’t until the cold war ramped up, and the united states was losing international appeal as the righteous alternative to growing global communist struggle, when the US would respond with civil rights concessions that would, in effect, leave many of the far-right and confederate forces that were murderously illiberal with a level of capital, power, and influence to spend the next half-century rolling back all the legislative gains of that period, with a continued significant base of support from the general populous.
this is the type of american liberal historical mythology about the civil rights period that has obscured more than it has clarified about the tumultuous bloodstained long 60s that remains severely unresolved on large account of the fact that cold war liberals, who were more invested in the maintenance of liberal imperial-capitalism than permanent transformation of the nations treatment of racial/ethnic minorities and its broader working-class, won out while those who saw those gains as impermanent & flimsy, were purged!