While the professionalism reformers were able to end the patronage system, in some cities they managed to insulate police departments from politics altogether, making it difficult for mayors and city councils to hold police officials accountable. At the level of individual cops, the use of squad cars and radios clearly brought a lot of benefits, but could also isolate police officers from the residents of the communities they patrolled. Cops out walking beats could chat with citizens, form relationships, and become a part of the community. Squad cars gave cops a faceless and intimidating
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