This is not entirely accurate.
If you clam up pre-Miranda warning, it can be used against you (if you didn’t specifically exercise your rights).
Case law about this: supreme.justia.com/cases/federal/us/570/178/
Post-Miranda warning, there’s no issue. The warning literally advises you of your right to be silent.
YouAreLiterallyAnNPC@lemmy.world 4 weeks ago
Ah, right. The Supreme Court decided we only get to have the rights we can remember under any given circumstance. Don’t let the cops catch you sleeping. Totally normal stuff in a totally normal democracy. Not at all a sign of any sort.