If you're going to show up at a speech and heckle the man on stage, you'd probably better make sure he's not a cum laude Princeton graduate and a world renowned debater. Ted Cruz is just such a guy, and he's probably not someone to whom you want to start mouthing off. This is especially true if you're some low level Organizing for Action goon who's packing little more than a high school diploma and a headful of barely controlled rage.