Anti-hate groups should be sure to line the roadway he will be passing as well as the entry points to the arena to ensure he notice the unhappiness people have with him.   And make sure those rally attendees realize that the rest of believe they are like weimar germany in the 1930's.  They either agree with trumps white supremacist/neo-nazi beliefs or at the very least they are willing to enable them.  Either makes them faux-Americans at best.