It absolutely has. Both the Left and the Right have seared consciences and take no issue with murder and thuggishness as long as it's "their guy" doing it to "the other guy".

The world was never a wise and virtuous man's paradise, but it has been quickly sliding into ever increasing and monstrous irrationality. Give Plato's "Republic" a read and you might find it concerning how closely we exemplify the last stages of political and social decline.