Flags are handy to use in wars, so you know which side to kill.
A “flag waver” is an overly, misguided patriotic who hangs many flags around the outside of their house, waves them in their hands or attaches them to their vehicles.
Some of the more inbred “Hill Billy,” “Chuckle Head” individuals will even stick a giant flag on a tall pole and attach it to the back of their vehicle so that they can slowly drive around town with the big flag flapping in the wind for all to see.
These “people?” get easily excited and would be the first to verbally send you off to some unjust war to rape and pillage some far away country. These wars are usually created by big businesses that use government politicians as their puppets to make money. These wars/business ventures are really for stealing some other country’s natural resources while killing their inhabitants in the name of “giving them democracy,” eradicating non-existent “weapons of mass-destruction,” etc.
Hitler was really into his flags. During the height of World War II, if you were the one guy on the block who didn’t have your big Nazi flag floating in the wind out front, you could get a one-way ticket to a concentration camp for being a malcontent and unpatriotic.