... If you exercise your right to remain silent, they will threaten to arrest you. This is the unconstitutional part. And I didn't learn that in high school civics ;-)
Originally Posted by 1hungkcmale4u
I'm sure you didn't learn that in civics because threatening to arrest you if you don't talk isn't illegal or unconstitutional. In fact, law enforcement can flat lie to you, make false promises and even participate in the criminal activity, depending upon how that is done. In fact, if you haven't been arrested, the ability to curtail government inquiry is limited by your own tongue. I assume that was your point based upon the rest of the post.
Whether you are under arrest or not thus triggering the issue of custodial interrogation and when that attaches is another matter. It is a subtopic of this, and an arrest requires no official pronouncement and generally only requires an effective limitation on your ability to leave by law enforcement, but as I said that is all a different related issue.
Only during a "custodial" interrogation do enforceable restrictions come into play in the form of the need to then give Miranda warnings as to your right against self incrimination. At this point your ability to curtail further inquiry is by invoking your right to remain silent. That doesn't mean law enforcement has to stop talking, too. If you then respond after you've been warned, you don't have to be re-Mirandized as you have waived the right already by responding. The 5th Amendment only provides that you shall not be compelled to be a witness against yourself, and it provides effective protection only in criminal proceedings. There are exceptions, constructions, circumstances and nuances to all of this too numerous to go into here, but this is the general rule.