Hate to tell you but after 9/11 when every one has flags on their cars after a few month when they would fall or fly off in to the street, there was many a person that stopped and walk out in traffic to collect them. I know I did and I usually was not they only one going for that same flag at the same time.
On 9/11, I bought from my local grocery store, for full price, a hand flag with a broken stick that would most likely have been dicarded. I still have it, sans stick, on the visor in my car.