"Modern policing did not evolve into an organized institution until the 1830s and '40s when northern cities decided they needed better control over quickly growing populations. The first American police department was established in Boston in 1838. The communities most targeted by harsh tactics were recent European immigrants. But, as African-Americans fled the horrors of the Jim Crow south, they too became the victims of brutal and punitive policing in the northern cities where they sought refuge. In 1929, the Illinois Association for Criminal Justice published the Illinois Crime Survey. Conducted between 1927 and 1928, the survey sought to analyze causes of high crime rates in Chicago and Cook County, especially among criminals associated with Al Capone. But also the survey provided data on police activity—although African-Americans made up just five percent of the area's population, they constituted 30 percent of the victims of police killings, the survey revealed. "There was a lot of one-on-one conflict between police and citizens and a lot of it was initiated by the police," says Malcolm D. Holmes, a sociology professor at the University of Wyoming, who has researched and written about the topic of police brutality extensively. That same year, President Herbert Hoover established the National Commission on Law Observance and Enforcement to investigate crime related to prohibition in addition to policing tactics. Between 1931 and 1932, the commission published the findings of its investigation in 14 volumes, one of which was titled “Report on Lawlessness in Law Enforcement.” The realities of police brutality came to light, even though the commission did not address racial disparities outright."