[Brian White]

From what I've read and seen on the History channel type shows, that actually is a spinoff from the crowd throwing/thrusting their thumbs down like a dagger or sword (which their thumb represents)over and over. In a way they are cheering on the agressor. They say that the emperor really didn't do this, but it makes for good movies so that's what we see today. As far as whether it's in game or not I've not read so Derek will need to answer that.