I think it's far more ominous than you suggest. What if this is a strategy he is playing, completely aware that democrats aren't planning any weaponized violence or even any bottle-and-rock throwing.

I think this is code.

It's telling the proud boys and all the other low rent white boy groups organizing underground, to come out on election night and scare the living shit out of all Americans who oppose Trump. AR-15's on their shoulders, mAGA hats or gang badges in display, and showing extreme aggression to anyone who appears to be anti-Trump. This has happened in Brazil, Philippines, and of course in Italy almost a century ago.

The call is out to the thug groups to show them damn snowflakes they need to go home and shut up or they will get shot.