Why were the strong politics of radical reconstruction largely ineffective in changing the attitudes of white southerners toward African Americans?

The strong politics of radical reconstruction was largely ineffective in changing the attitudes of White southerners towards African Americans because the white southerners were not mentally ready to accept African Americans as socially equal human beings.

Explanation:

The efforts taken by radical Republicans in the 1860s and 1870s in order to establish a society without the prevalence of racial discrimination mostly proved unsuccessful. The fact that the African Americans were relieved from slavery forever angered most white southerners and culminated in violent clashes between the two.