It's impossible to prove a negative, Jack. Remember the guy that got sucker punched at a Trump rally because he heckled DT? Your argument is specious, and can be paralleled by saying "Why wouldn't a Republican attend a Democratic rally and shout out racial epithets to make the Dems look bad?" Sure, it's possible, but what proof do you have (besides your obviously lurid imagination) that the guy that shouted "McCain ought to die" was in fact a Democrat. You're like the woman in "Breathing Lessons" who threw her husband out because she dreamed he stomped on her needlepoint. Just because it's possible doesn't mean it's true, especially when more likely explanations (that one of Trump's supporters hates McCain as much as DT does) exist. Take your lithium and call me in the morning.