High Level Cop Exposes Illegal Quota — Cops Told to Make Arrests Even if There’s No Crime 

the overwhelming majority of the time a driver sees police lights in their mirror is because they have been targeted for revenue collection—often the result of a quota system—and they are about to be given a ticket, or worse.
The quota system was run by Deputy Chief Michael Barz who urged Paz and other lieutenants to increase the number of arrests, traffic stops, and tickets — regardless of actual criminal activity. In other words, cops were told to act like mafia goons and constantly shake down and harass citizens within the community. 
Source: High Level Cop Exposes Illegal Quota — Cops Told to Make Arrests Even if There’s No Crime | From the Trenches World Report