Wikipedia
De-policing
De-policing is an Americanism for a police industrial action strategy of a work place slowdown. A slowdown is an industrial action in which employees perform their duties but seek to reduce productivity or efficiency in their performance of these duties. A slowdown may be used as either a prelude or an alternative to a strike, as it is seen as less disruptive as well as less risky and costly for workers and their union.
De-policing represents a de facto police strike, in which the police withdraw an aspect of their crime prevention services. It is a practical police protest at perceived political interference in their day-to-day task of policing.