I forgot to add something to my first reply. America isn't barbaric because of black people and non white immigrants. Americans has always been way less civilized than Europeans. It's the most barbaric western society. It's not like fair skinned Americans are perfect, hyperciviled beings. Americans in general are uncivilized. been to Canada it was like night and day driving over the border. They don't litter and they're extremely mature.
American soceity is barbaric because the pilgrims where cultists. It basically stated put as a cult compound. They were extremely superstitious and anti intellectual. They rejected all of the things that make western civilization civilized and retained the primitive, backwards elements of it. They're anti intellectualism and backwardsness influenced every aspect of American society.