The trend of fans stealing UFC fighters' hats as they make their way to the Octagon seems to be a worldwide phenomenon. Both Anderson Silva and Antonio Rodrigo Nogueira both got their hats stolen at UFC 134. In their cases it may have been a lucky charm since they both looked great in stopping their opponents. You steal their hats, they steal their opponents' souls. Still it may be time to move the crowd back a couple of feet if this trend continues.
Here are GIF's of UFC 134's hat thievery.