People of dark skin tend to commit more crime, this is a well replicated phenomena, the cause for why is discussed.
Ellis et al. (2009) is a literature review of over 5200 scientific studies examining how many different factors correlate with and otherwise are related to crime, its seen internationally that Blacks, South Asians, Native Americans, non-White Hispanics commit more violent crime than Whites and East Asians.
Tangentially related is immigration and crime, with most studies finding a positive relationship. Most of the studies that find a negative relationship are studies focusing on European and East Asian immigrants.