1% of Swedes born 1958-1980 account for 63% violent crime convictions. 0.12% account for 20% violent crime convictions. High-persistence violent criminals are almost all male and start young with mental and substance disorders. Half of violent crime convictions done by people with 3+ prior violent convictions. Preventing reoffending after 3 violent convictions avoids half of all violent convictions. 72.8% of federal offenders had prior convictions averaging 6.1. Among US state prison admits 75% have 5+ prior arrests. 46% have 10+ prior arrests. 14% have 20+ prior arrests. 5% have 30+ prior arrests. 1% of prison admits extrapolated to have 46+ prior arrests. 124 NYC subway arrestees in 2023 had 60+ lifetime arrests each totaling 7500. 81.9% of released prisoners rearrested within 10 years. Homicide offenders averaged 11 prior arrests. 500 people cause 60-70% gun violence in DC. 327 NYC shoplifters made 1/3 of 2022 shoplifting arrests with 6000+ total arrests. 14% of NYC streets produce 75% property crime. Three dead Irish burglars had 200+ convictions causing burglary plunge. 11 caught London bike thieves caused 90% local theft drop. US comment claims 14% population commits 50% murders narrowing to 3-4% by sex and age.