In 2016, 59% of murders committed in the U.S. resulted in a suspect being identified and acted upon by the criminal justice system. This rate has fallen from 92% in 1960. In places like Chicago, it has recently been as low as 17%. When murders and other violent crimes remain unsolved: (1) the perpetrators remain free to commit more carnage. (2) potential criminals are less deterred because they become less concerned about being caught. (3) citizens' fears of crime and retribution for reporting crime increase. Unsolved murders are more likely to occur in minority neighborhoods because of the nature and amount of these crimes and low levels of witness cooperation.