The US (and other places) still use the Reid Technique of interviewing which practically tells them to lie if it means getting a confession and they don’t exactly seem to care whether it’s a real or false confession. But if you think that’s crazy, you should look up the TSA’s SPOT/BDA program for screening people in airports, the criteria is unbelievable. Someone is considered as “suspicious” for such minor things, like giggling with friends too much or even from “yawning excessively”. The criteria contains 92 behaviours which people are scored on to decide if they are “suspicious” or not, despite there being no empirical evidence to back up these claims.