So I prettymuch just look up random stuff and thats how i found this... you gotta admit... he was determined to get his point across.... building a tank out of a bulldozer is one way to do it.
https://en.wikipedia.org/wiki/Marvin_Heemeyer

I live here in Colorado and remember this incident well.  He really did a number on the town up there. 

That's a bit extreme, over this side of the pond one farmer was so annoyed with his local town council that he drove his tractor past the town hall with muck spreader attached and let fly...
Have a look