What is a "false flag operation"?
A communist pretending to be a conservative causes a police reaction
Courtesy of Wikipedia -
“False flag operations are covert operations conducted by governments, corporations, or other organizations, which are designed to deceive the public in such a way that the operations appear as though they are being carried out by other entities.”
Tatt
Liberal and other opposition groups are being "instructed" to infiltrate Tea Parties pretending to be conservatives, volunteering for media interviews as "conservatives" while spewing caricaturish anti-government, racist, violent, separatist phrases to make the genuine tax-protesters look bad. If they can incite violence with the police or cause mayhem, so much the better. Any Tea Party attendees would be well-advised to watch out for any of these false-flag agitators. The gubmint is just looking for an excuse to "be proven right" so it can crack down on the opposition (us).
It would literally be like a ship flying the flag of a nation other than it's own, then attacking a third nation's ships, in order to incite a war between nations two and three. An even more common variant would be for nation A to fly the flag of nation B on a ship used to attack one of it's own ships, so as to provide a cause for war against nation B, without looking like a naked aggressor.
Pirates also often flew a false flag, but generally ran up the Jolly Rodger, or whatever flag they fancied to ID themselves, once they had closed to "point blank" range, or even boarding distance.