the second-class citizenship that is imposed on a disproportionate number of people of color, specifically African-Americans. She compares mass incarceration to Jim Crow laws, stating that both work as racial caste systems. Many research findings appear to agree that the impact of victim race in the interpersonal violence (IPV) arrest decision might include a racial bias in favor of white victims. A 2011 study in a national sample of IPV arrests found that female arrest was more likely if the male victim was white and the female offender was black, while male arrest was more likely if the female victim was white. For both female and male arrest in IPV cases, situations involving married couples were more likely to lead to arrest compared to dating or divorced couples. More research is needed to understand agency and community factors that influence police behavior and how discrepancies in IPV interventions/ tools of justice can be addressed. Recent work using DNA cluster analysis to determine race background has been used by some criminal investigators to narrow their search for the identity of both suspects and victims. Proponents of DNA profiling in criminal investigations cite cases where leads based on DNA analysis proved useful, but the practice remains controversial among medical ethicists, defense lawyers and some in law enforcement. The Constitution of Australia contains a line about 'people of any race for whom it is deemed necessary to make special laws', despite there being no agreed definition of race described in the document. Forensic anthropology Similarly, forensic anthropologists draw on highly heritable morphological features of human remains (e.g. cranial measurements) to aid in the identification of the body, including in terms of race. In a 1992 article, anthropologist Norman Sauer noted that anthropologists had generally abandoned the concept of race as a valid representation of human biological diversity, except for forensic anthropologists. He asked, "If races don't exist, why are forensic anthropologists so good at identifying them?" He concluded: Identification of the ancestry of an individual is dependent upon knowledge of the frequency and distribution of phenotypic traits in a population. This does not necessitate the use of a racial classification scheme based on unrelated traits, although the race concept is widely used in medical and legal contexts in the United States. Some studies have reported that races can be identified with a high degree of accuracy using certain methods, such as that developed