California notoriously does not house the homeless nor feed them, leading to massive amounts of crime by people with mental illness having to live on the street. It also has some of the worst wealth inequality on the planet. When a 1 bedroom shack costs >$1M, you've basically taken a sledge hammer to any concept of a society.
20% of US GDP goes mostly to social security, imagine how much crime we'd have if we didn't spend that and every senior citizen had to scavenge for food! I would say at least 99% of of the money we spend on police and the military should instead go to social support and local infrastructure improvements.