Plausible deniability is probably the best answer. If you just tell them “no, I know my rights” if you get randomly selected, then you’ll get put on a list for

Plausible deniability is probably the best answer. If you just tell them “no, I know my rights” if you get randomly selected, then you’ll get put on a list for being randomly selected every time. But if you appear to cooperate, you get let off entirely.