You have this 100% backward. The problem is that the public fails to use the exact same line of responses when asked questions by the government.

"Were you at the scene of the crime?" - I can't answer that, sir.

"Did your accomplice enter the bank while you awaited at the wheel of the car?" - I can't divulge information regarding personnel nor procedures, sir

"This is "Bad Bandit Benny", entering the bank and shouting "hands up, this is a robbery". Do you know "Bad Bandit Benny"? - I am aware of Bad Bandit Benny, but I can't provide any further information about him.