[atondwal]

Swastikas are a little different though. It's been decoratively used for apolitical reasons for thousands of years on all sorts of things, but was only really flown as a flag starting with the NAZIs in the 1920s. There's a lot of architecture, even in Europe involving pre-NAZI swastikas. And before and even shortly after the NAZI party adopted it, it was used a a good luck symbol in the west (http://en.wikipedia.org/wiki/Western_use_of_the_swastika_in_...).

[jlgreco]

I think that is quite similar to rainbows though. Use lots of places in a variety of ways for a very long time, but only really use on flags by the LGBT movement.