Summary: Homicide rates in the United States fluctuate wildly between 1900 and 2022, instead of declining steadily, and the 1943-1965 average was lower than the 1999-2019 average. In 2015-2021, the United States averaged 5.5 homicides per 100,000 residents, about 6.4 times the average for other developed countries (0.86). The U.S. incarceration rate is unusually high (about 531 prisoners per 100,000 residents) and only four countries have a higher rate. In terms of homicides, the ratio of prisoners to homicides in the United States is close to the average for rich countries, but the ratio of police officers to homicides is extremely low, and the murder detection rate is low. The claim that prisoners in the United States are mainly "minor drug offenders" is false in light of these figures, as only 13% of prisoners are in prison for drug offenses, and 3% for drug possession. The majority of prisoners are in prison for violent crimes (62%), including 15% for murder. Those sentenced to state prison are overwhelmingly recidivists: less than 5% of them went to prison after their first arrest, more than 75% had at least 5 prior arrests, and the median number of prior arrests is 9. Recidivism is huge: within 10 years of release, 81.9% are re-arrested, 68.8% are convicted again, and 60.7% are incarcerated again. Violent crime is highly concentrated by gender and age: 93.3% of inmates are male, and homicide victims are most often between the ages of 20 and 30. In 2021, homicide victims are much more likely to be men (12.7 per 100,000) than women (2.9 per 100,000). Homicide victim rates by race/ethnicity in 2021 are very uneven: non-Latino blacks 33.9 per 100,000 compared to non-Latino whites 3.1, Native Americans 12.4, Hispanics 7.0 and Asians 1.6. Most homicides are intragroup: 80.5% of white victims die at the hands of whites, and 90.9% of black victims die at the hands of blacks. Between 2010 and 2020, in cases where the race of the victims was known, the number of black-on-white homicides was more than twice as high as white-on-black homicides. Homicides in the United States are unevenly distributed geographically, with high rates in the Southeast and parts of the Southwest and in northern counties, often associated with large Native American populations/reservations. Firearms dominate the methods of homicide in the United States (76.7%), with gang-related homicides accounting for a small portion (7.7%) compared to everyday crimes and conflicts (e.g., altercations 33.9%, fights 13.7% and other crimes 22.9%).