Of the ten most populous countries in the world, only China (2.114) and Indonesia (1.783) have lower peace indexes than the United States (2.337). Of the next ten, only four have lower indexes. In other words, two thirds of the twenty most populous countries in the world (of which the U.S. is third) are more violent than the United STates. Unless by the "rest of the world" we're going to ignore most of the people?
[0]: https://worldpopulationreview.com/country-rankings/most-viol...