All you have to do is look at the crime statistics and income statistics for cities across North America. Cities that have lower GDPs (less money, less opportunity) generally have higher crime rates. If despair is high, people will act out of desperation. What you are wilfully ignoring is the fact that “countries that are poorer than the US” also are drastically different culturally than the US. Almost nowhere else on Earth has the same kind of income disparity that the US has. You can’t take a developing nation where 50% of people live in poverty, and compare it to a developed nation where no one needs to live in poverty but are forced to do so by manipulated housing and job markets.