He didn’t. There was plenty of water in the cup. Did water spill out of the cup onto the stage when he threw it?
I still think the location and timing was a deliberate troll intended to distract from these SDNY shenanigans. It makes no sense otherwise. There was no reason to believe they couldn’t draw a big crowd anywhere. So why not a big city in a swing state?
The attendance could simply be that they chose a small city. Only 400,000 people.
Tulsa metro is a million people. He still only drew 6,200. And the bigger the city, the lower the percentage of Trump supporters.