I can just imagine 50,000 plus people hold a blockade, AF1 cannot land nearby, lands far away, motorcade then runs into multiple sudden interstate construction zones.
And if he does make it there he gets pummeled with eggs.
The local police should refuse to cooperate - no closing of roads for his motorcade, no crowd control, etc. I suspect the Secret Service would call off the visit, due to security issues if local law enforcement was not providing support. Of course, they won’t do this, but after some of the statements by the local police on gun control not preventing this massacre, I’m sure they wish they could stay away.
Rotten eggs would be nice.