Most people don't remember this...there was a part of the Obama crowd pushing this hand signal that they could use at rallies, and to greet each other. They thought it was very clever, the "O" was obvious, for Obama, the interlocked fingers had to do with many coming together, and so on. They could do this above their heads, flash it to each other to let them know their allegiance, etc.
It was all well and good, until someone with a brain larger than a pea realized just how completely CREEPY it was, and it died quiet death after a few articles made it to the national level. If there was any doubt about how deranged these people are, check out this quote from the link below: "...Much thought went into the relatively simple idea. "You interlace your hands in a circle, the interlacing being a symbol of different types of people coming together and the circle a symbol of unity..."
You can still find the US News and World Report article on it here...they can't scrub EVERYTHING...
When I saw the poster, I immediately thought of the famous head in the rear poster, and made this little animated gif.