Excuse me you think the guard having the sign is a crime, but laying hands on the guard is just “not the appropriate response?” Perspective please, a guard takes your sign you do NOT have the right to jump him. You want to yell at him, you want to sue him, have a party. Assaulting a guard to a presidential candidate is not a good idea.
I don't believe I ever said the man's response was appropriate. In fact, I'm quite certain I didn't and I believe the Mexican screwed up by doing so. But the guard took the banner and walked away with it. That is theft.