Law Enforcement-Wall Of Blue?

Sort of means one cop won't rat on another for doing something out of line. Good example would be several cops stonewalling an internal affairs investigation involving an aggressive officer who maybe used excessive force on a suspect. They might have been on the scene and witnessed it but all claim not to have seen anything. I once heard it referred to as the blue code of silence.

It is an officer's way of taking care of fellow officers. Not everything can be done "by the books" all the time. Things go wrong, people make bad decisions, etc. This is to make sure that the good guys don't get punished for trying to do their job.

I work in juvenile detention, where we sometimes have to do restraints. We use a system called "TCI" (short for Therapeutic Crisis Intervention). There is an extremely specific method for restraining with this system, but it cannot always be followed precisely, as each situation has to be dealt with individually. The same is true for police work...there has to be room for adjusting to the situation, or they would be ineffective during most situations they have to face.

That's my take on it.

Lie cheat and cover up for cops.

Probably because most cops wear dark blue? i LOVE cops <3

It means they won't snitch out their fellow officers even if they witness their fellow officers breaking any laws.