It does not change anything. USA was established by killing the original inhabitants almost totally. Labour was shipped from Africa violently. Violence as a general phenomena, violent criminalism and counterviolence are the reality of today. USA is widely hated by people around the world.
American violence causes counterviolence which USA calls terrorism.
The level of American political cultur is not on the basis any kind of social knowledge but on the level sexual stupidities by the president of the country. Even little green men will do when seeking for more profits for the arms industry. In American universities there are no real social sciences. The level of social sciences can be described by an American professor-level opinion of the highest level of a human community. Scientists in Europe and elsewhere in the world have laughed on this statement for long.