This is similar to the common observation that airport security don't even attempt to stop bad actors. They have a quota of examinations to make and they make them on the least likely to give them trouble for it. They are looking for non-criminals to harass to fill their time.

The entire police department can be mobilized to take down one twitter user each day, and they never have to worry about being shot at again. The cops have chosen 'easy' over 'duty' and the result is bowling for dystopia.