I stumbled across this video today of the "Killdozer". I had never heard of it.
Some dude was pissed over a zoning dispute. He decided to extract his revenge by weaponizing a bulldozer. Apparently, cops couldn't figure out how to take him out. Guns didn't work and they couldn't get in the cab. He ended up offing himself.
This video is the crazy helicopter footage from the event.
You can read more about on Wiki.