> California already incarcerates 5x more people than any European country, and 10x more than the Nordics
Well, most European and Nordic countries don't have 13% of the population committing 52% of the violent crime. So this is kind of an unfair comparison.
Why? Immigrants, various ethnic and social minorities, and repeat offenders are overrepresented in Europe's crime stats as well. If anything, Europe tends to have much shorter sentences, so reoffenders can commit more crimes.
I think the biggest disparity is the lack of any meaningful mental health or addiction treatment, and the law allows people who are out of their mind to refuse treatment and die on the street.
https://www.prisonpolicy.org/profiles/CA.html
There are many, many problems in CA, but putting more people in jail is not going to solve any of them.