For example this was going around for a long time:
https://www.brennancenter.org/our-work/analysis-opinion/debu...
Then this happened in 2025 when there was a crack-down on crime:
https://counciloncj.org/crime-trends-in-u-s-cities-mid-year-...
Also, 1% of the population is responsible for most of the crime
https://pmc.ncbi.nlm.nih.gov/articles/PMC3969807/
So if you end up jailing people, the crime just goes down.
Also, then if that's true, then cancel all murder prison sentences!