Even Worse than all of that, they can use all of those things, while threatening you with dozens of charges and decades of imprisonment then say "but if you act right now and sign this we will only give you a couple of years and then you will be free"

in any other context these tactics themselves would be illegal, and i am firm believer that you can not enforce the law by breaking, and that the police should NEVER how the power to do things the public can not