Law & Order as the number one authoritative source for interactions.
When the SVU makes arrests, during interrogations: “You have to talk to us, cooperate and we can put up a good word with the district attorney. Confess now and we can work on a deal later. If you don't cooperate with us we can't help you.”
The exact same cops the very second one of their victims is arrested by another department for an unrelated crime: “DON'T TALK TO THEM, DON'T ANSWER ANY QUESTION, ASK FOR A LAWYER, REJECT ANY OF THEIR DEALS!”