^^ 100%. Vehemently refuse to go into a private room, where anything that happens will probably not be recorded (or mysteriously disappear if trouble occurs). If you're told you have to go into a private room, demand the presence of a LEO.

Demand to be able to see your belongings at all times; the TSO should retrieve your items and bring them with you (but you are not allowed to touch them until you've been cleared.) If the TSO won't remove your items from the belt prior to the pat down, face your items and the PAX going through screening at all times.