I haven't seen a good analysis that includes urbanization and human migration.
It can be simultaneously true that Urban crime rates have declined while average crime experienced by people has increased.
If Grandma grew up in a rural setting with a low property crime rate, and I was in a big city with a higher crime rate, the crime in their environment has gone up even if the city's crime rate is going down.
The same may be true for the average American due to the net increase in urbanization.
It can be simultaneously true that Urban crime rates have declined while average crime experienced by people has increased.
If Grandma grew up in a rural setting with a low property crime rate, and I was in a big city with a higher crime rate, the crime in their environment has gone up even if the city's crime rate is going down.
The same may be true for the average American due to the net increase in urbanization.