When we were at WDW for 2 weeks after 9/11 those pins were absolutely impossible to find. Every single patriotic symbol was snatched up before it could even be displayed.
We were in a huge line for some ride and someone walked by w/ the American Mickey pin and was asked where they got it. They guy said they just got a shipment in on the cart outside. People who had been in line for 15 minutes abandoned the line in droves to try to buy them- of course by then they were gone.
My 2nd favorite story was when were in a character line there were some English folks behind us in line. I said "Thank you so much for supporting us during this time". Their response was an immediate "We are in this together". Made me tear up.

I thought that was so nice.