Or do they simply learn that their roles aren't valued by society and take any chance they can to assert dominance
Therein cementing their devaluation by society. The only way that anti-black racism will go away in America is for the vast majority of black people to identify productivity, competence and civility as their cultural hallmarks, and actively separate themselves from the black people who don't uphold those ideals. (in much the same way as average white people actively separate themselves from white trash) As proof of concept, look to the Asian-Americans. Asians are just as visually distinctive, yet very little discrimination comparatively, there is even some preferential treatment in the job market.
While it has nothing to do with racial genetics, there is an American sub-culture, largely among urban blacks, that is accepting or even encouraging of criminal activity. Thug Life ideals are just as much a generator of crime and violence as Aryan Nation ideas, yet the they have very different levels of acceptability in general society. The first step towards fixing a problem is admitting that there is a problem.
When did the competition between countries end in your world?
When we realized that the competition only serves to increase the wealth and power of the aristocracy (in what ever form it takes in different countries)
Any rich country will sooner carpet bomb a poor country that lower it's standard of living to reach the average.
Obviously false. The US exported it's entire manufacturing sector to China to do exactly the opposite of that. It raised China towards the average and stagnated the US median, while vastly increasing the wealth of the aristocracy.
Virtually all of us are infested with CIA. What's the problem?
The CIA: The cause of, and solution to, all of America's problems.