arrested for another homicide. These are the lowest rates of re-arrest for the same category of crime. The 272,111 offenders discharged in 1994 had accumulated 4.1 million arrest charges before their most recent imprisonment and another 744,000 charges within 3 years of release. The Prison Policy Initiative analyzed the recidivism rates associated with various initial offenses and found that statistically, "people convicted of any violent offense are less likely to be re-arrested in the years after release than those convicted of property, drug, or public order offenses." The ability of former criminals to achieve social mobility appears to narrow as criminal records become electronically stored and accessible. An accused's history of convictions are called antecedents, known colloquially as "previous" or "form" in the UK and "priors" in the United States and Australia. There are organizations that help with the re-integration of ex-detainees into society by helping them obtain work, teaching them various societal skills, and by providing all-around support. In an effort to be more fair and to avoid adding to already high imprisonment rates in the US, courts across America have started using quantitative risk assessment software when trying to make decisions about releasing people on bail and sentencing, which are based on their history and other attributes. It analyzed recidivism risk scores calculated by one of the most commonly used tools, the Northpointe COMPAS system, and looked at outcomes over two years, and found that only 61% of those deemed high risk actually committed additional crimes during that period and that African-American defendants were far more likely to be given high scores than white defendants. The TRACER Act is intended to monitor released terrorists to prevent recidivism. Nevertheless, rates of re-offending for political crimes are much less than for non-political crimes. African Americans and recidivism With regard to the United States incarceration rate, African Americans represent only about 13 percent of the United States population, yet account for approximately half the prison population as well as ex-offenders once released from prison. As compared to whites, African Americans are incarcerated 6.4 times higher for violent offenses, 4.4 times higher for property offenses and 9.4 times higher for drug offenses. African Americans comprise a majority of the prison reentry population, yet few studies have been aimed at studying recidivism among this population. Recidivism is highest amongst those under the age of 18 who are male and African American, and African