Why did early police community relations programs focus on minority communities?
The major reason for this is that minority communities had the worst relations with police and the most need for policing. Crime tended to happen disproportionately in poor, minority neighborhoods, meaning that law-abiding citizens in such neighborhoods needed police protection more than other people. At the same time, however, people in such neighborhoods tended to be most suspicious of police, given issues such as police brutality towards minorities and police harassment of minorities. This made it hard for police to get any cooperation even from law-abiding citizens in minority communities. It was for these reasons that these early programs focused on minority communities.