I take HOV with a coworker sometimes and the cops that patrol it are especially prone to creating hazards. Some mornings they set up what is literally a checkpoint at the HOV exit ramps to screen each car. When they do it almost always backs up traffic for miles into the HOV lane behind it, thus completely defeating the purpose of having HOV in the first place. Not that they would care - each violator they catch is another $200 in the pocket, even though the vast majority of drivers who are affected by their patrolling tactics are following the law.
The boys in blue commit crimes when they ignore the illegal actions of their buddies. Maybe they need to arrest themselves.