Here. Excerpts:
Evidence of the liberal tilt in criminology is widespread. Surveys show a 30:1 ratio of liberals to conservatives within the field, a spread comparable with that in other social sciences. The largest group of criminologists self-identify as radical or “critical.” These designations include many leftist intellectual orientations, from radical feminism to Marxism to postmodernism. Themes of injustice, oppression, disparity, marginalization, economic and social justice, racial discrimination, and state-sanctioned violence dominate criminological teaching and scholarship, as represented in books with titles like Search and Destroy: African American Males in the Criminal Justice System, The New Jim Crow: Mass Incarceration in the Age of Colorblindness, and Imprisoning Communities: How Mass Incarceration Makes Disadvantaged Neighborhoods Worse.
[. . .]
When it comes to disciplinary biases, however, none is so strong or as corrupting as liberal views on race. Disproportionate black involvement in violent crime represents the elephant in the room amid the current controversy over policing in the United States. Homicide numbers from the Federal Bureau of Investigation Supplementary Homicide Reports, 1976–2005 indicate that young African-American males account for homicide victims at levels that are ten to 20 times greater than their proportion of the population and account for homicide offenders at levels that are 15 to 35 times greater than their proportion of the population. The black-white gap in armed-robbery offending has historically ranged between ten to one and 15 to one. Even in forms of crime that are allegedly the province of white males—such as serial murder—blacks are overrepresented as offenders by a factor of two. For all racial groups, violent crime is strongly intraracial, and the intraracial dynamic is most pronounced among blacks. In more than 90 percent of cases, the killer of a black victim is a black perpetrator. (emphasis added)