It’s not at all hard, and obviously so: for most crimes (e.g. assault, rape, robbery, murder), the perpetrator’s race is observable. The National Crime Victimiz

It’s not at all hard, and obviously so: for most crimes (e.g. assault, rape, robbery, murder), the perpetrator’s race is observable. The National Crime Victimization Survey (NCVS) and National Incident Based Reporting System (NIBRS) measure exactly this, and surprise, surprise: offense rates and arrest rates line up pretty exactly for every race across every category of crime.