Answer:
Policing research often reveals what works and what doesn't work in the policing field. The term evidence-based policing is frequently used to describe research that targets, tests, and tracks strategies to help decision-makers deal with policing issues.
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Prohibition created an enormous public demand for illegal alcohol. Gang leaders such as Al Capone and Bugs Moran battled for control of Chicago's illegal drinking dens known as speakeasies. ... Capone was imprisoned for income-tax evasion and died from syphilis in 1947.