it's all related

most of the violent crimes are from people with prior crimes, but the prior crimes themselves weren't necessarily violent, but just enough to marginalize that person from ability to participate in society with steady jobs

such as the possession of now-legalized substances, and the possession stop itself was based on flimsy pretexts that could have been fought, but it made more sense to take a plea-deal for that person or they were not aware of how to not engage with police and damned themselves without a lawyer present