Have you ever heard of sovereign citizens? In brief, they're a bunch of people who believe the federal government has tricked everyone into following a set of false laws, and you can beat the government if you utter the right words. They think the law works like Harry Potter, where the right incantation makes you invisible to the IRS.
For example, here's the kind of flag you can expect to see in a court room:
It's less clean-up than having judges hold bald eagles on their arm.
Sovereign citizens argue that the gold fringe makes it an admiralty flag, and thus none of your sea-laws work on me, judge! Also, sometimes these people kill cops. And by "sometimes," I mean "frequently":
"I refuse to recognize your communist-sharia 'homicide laws.'"