For those who've seen the (yes blurry) video of what is nonetheless clearly a human figure on top of the water tower here's CBS 'debunking' the 'water tower shooter' allegations.

"The videos do not show a person atop the tower. However, blurred versions of these videos were used to push the false claim, where a shadow on the tower could be confused for a person.
Google Earth imagery shows the shadows are actually a Pennsylvania American Water logo and a vent on top. Both are visible from the front side that was facing spectators at the rally."
https://www.cbsnews.com/news/trump-rally-shooting-conspiracy-falsely-claims-there-was-second-shooter/

Here's the Google Earth image they link to.

😂😂😂😂😂😂😂😂 ... they've utterly lost their minds