Final answer:
The Kansas City Study revealed corrupt practices and the physical separation between vice districts and middle- and upper-class neighborhoods in America's policing.
Step-by-step explanation:
The Kansas City Study had several implications on policing in America. The study highlighted the collusive relationship between vice and law enforcement, exposing corrupt practices such as police officers delivering invitations to illegal parties and protecting brothels. It also revealed the physical and ideological separation between vice districts and middle- and upper-class neighborhoods, which allowed the middle-class clients to distance themselves from the iniquities of the city.