Crime in the United States was pretty much out of control by the 1970’s.
There were a variety of reasons for that, but I think the biggest factor is that a new strategy of enforcing the law came in to vogue. The public was encouraged to view criminals not as bad people who need to be punished for their misdeeds, but as lonely forgotten souls who were driven to crime due to bad experiences during their formative years.
Perps were sick, you see, and they needed healing and compassion more than hatred and marginalization.
This attitude eventually got turned around, but it took awhile. It took even longer for the damage caused by this touchy-feely crap to get cleaned up, but it finally happened. This is due to the fact that the number of convictions started to climb, and the number of convictions that resulted in jail time also started to increase. This resulted in a larger prison population, but the results are hard to ignore.
Crimes against property started to fall by 1980, but it wasn’t until 1993 that we saw a reduction of violent crimes.
Still, once the ball started to roll it just kept on hurtling downhill. Today the people in the United States enjoy an aggregate crime rate that is less than half of what it was during the dark and lawless days.