Subject: Re: Smerconish interview with Gerald
I don’t know, I would think JFK might disagree.

And there's a non-zero chance that Secret Service told Trump there was a security issue and he cannot go out on stage, but he refused to listen and insisted on going out anyway. As I recall, he has talked about the crowds being "my people" at some previous outdoor event where he didn't want the metal detectors to be used.