When certain religions, ethnicity, cultures or nationalities immigrate into Europe & U.S.A. they or their descendants tend to commit more violent crime per person than White Christian Gentiles that already lived there
If they committed crimes at those rates in their own country that they came from then their country would go extinct because they murder people faster then they can reproduce.
Their own country punishes those crimes but USA & Europe do not so they commit crimes in Europe & USA
If a black / Muslim / Hindi person commits a crime in an African country then the African / Muslim / Hindi country punishes them but if they commit a crime in Europe or the USA then they let them off the hook
That is why they have not gone extinct from committing so much violence among themselves because they do not commit as much violence in their own countries and only in Europe and the USA because Europe and the USA lets them get away with it as long as they are not White nor Christian