Career criminals everywhere, if left without serious consequences and punished, will be responsible for the majority of crimes.
If you execute them or jail them for very long times/life then they can only commit crimes in jail, or no more crimes, if dead.
We need to execute violent criminals, male and female, for attempting to murder, or for murdering others. We need to execute the career chronic violent criminals, male and female. The sex predators, male and female.
In some of the urban ares, violent criminals are self-executing.