What do you mean why was there a backlash? There is always a backlash to goodness. Did you ever hear about what they did to that guy Jesus? The KKK and neo-Nazis are a backlash to democracy and decency.
The ultimate law of the universe is what I like to call probability balance — creation and goodness will always be, at some point in time, offset by destruction and bad. Stars are born and stars die. Peace is offset by war — life by death. These are the endless cycles of existence.