RIP
Marvin Heemeyer moved to in Granby, Colorado in the early '90s and bought a foreclosed 2-acre lot where he built a muffler repair shop. What he didn't know is that his purchase had stalled the development plans of a wealthy businessman.
Over the next decade, this businessman and his allies in town led a multi-year bureaucratic campaign that bogged Heemeyer down in endless fines and red tape. Heemeyer seems to have backed out of several deals as a way to stick it to his enemies, but eventually, after his lawsuit failed, he sold his business and decided to literally bulldoze the confusing legal system.
After armoring his dozer, he demolished the town hall, the workplace of a city official on the zoning board, the local newspaper, and the homes and businesses of the influential families who had targeted him. He killed no one except for himself after the dozer got stuck in a hardware store.