So what exactly can you get away with? A quick run-through through the TSA's Prohibited Items list hints at a surprising irony: Much of what is removed from carry-ons is perfectly legal if declared and packed in luggage that is checked and stowed.
Once you get started, it becomes quite easy to justify shaking people down for their papers.
I think the police should pull over anyone who looks like they work on Wall Street, at any time.