This guy is a fool. You can bet that the gun-grabbers are waiting with bated breath for some idiot to pull a gun out and start shooting so they can start screaming about gun control again.
I wouldn't doubt for a minute that they are even looking for some Dim mental cases to send to the meetings to stir up trouble in the hope he will get shot. Preferably a black or brown union member or members that attack protesters.
Yes,you DO have a right to carry a gun at a political rally. That doesn't mean it is an appropriate place to carry one because of the implied intimidation factor,just like the union goons with nightsticks. They don't have to actually beat on somebody with the nightsticks in order to suppress political speech or actions.
I carry a gun everywhere I go,but I wouldn't carry one to a political rally.