Police corruption is a specific form of police misconduct

Police misconduct

Police misconduct refers to inappropriate actions taken by police officers in connection with their official duties. Police misconduct can lead to a miscarriage of justice and sometimes involves discrimination...

 designed to obtain financial benefits, other personal gain, or career advancement for a police officer or officers in exchange for not pursuing, or selectively pursuing, an investigation or arrest.

One common form of police corruption is soliciting or accepting bribes in exchange for not reporting organized drug or prostitution rings or other illegal activities.