You might have once looked up at the sky and seen something unusual, like shoes dangling from a power line. Some people think that they might be a sign of trouble or maybe it's a secret code certain groups of people use. Sometimes you can notice a boot hanging on a fence. No, it's not some kind of weird new fashion statement – there's actually some pretty special symbolism behind it.

Learn more about your ad choices. Visit megaphone.fm/adchoices