This is an oldie, but goodie and worth 45 minutes of your time:

https://youtu.be/d-7o9xYp7eE?feature=shared

Here we have a law professor giving a presentation to his class on why you should never speak to the police. Towards the end he gives the stage over to a police officer to add his thoughts and potentially rebut the professor's arguments. The first thing the cop says is "everything he just told you is absolutely correct".