That reminds me of when Robbie Bernstein pointed out that there should be no such thing as "novel" prosecutions. A novel defense is fine, because our whole system is supposed to be innocent until proven guilty, but a novel prosecution means the state is going beyond the intended meaning of the law.

Undisciplined

Yep. The discussion of how deception filters through to other aspects of criminal proceedings really hits home. I always took it as a given that the police would lie rather than expose a weakness in the case that would "let the bad guy go free."

They justified it as protecting society from evil. 

siggy47

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The Pervasive Role of Deceit in American Policing

I'm guessing they don't have qualified immunity either.