Marvin Heemeyer

Who he was

Marvin John Heemeyer was a welder who owned a muffler repair shop in Granby, a small mountain town in Grand County, Colorado. People who knew him described him as friendly and hardworking. Over several years he came to believe the town was ganging up on him.

The dispute

The fight centered on land around his shop. Town officials approved a concrete batch plant on the neighboring parcel, which Heemeyer opposed because it cut off access to his business. He also clashed with the town over zoning, a sewer hookup requirement, and fines. He felt every appeal ended the same way, and he came to see the process as stacked against an ordinary small-business owner.

June 4, 2004

Heemeyer had secretly modified a Komatsu D355A bulldozer inside his shop, and the machine later became known as the "Killdozer." That afternoon he drove it through Granby for a little over two hours and damaged or destroyed about 13 buildings. Many belonged to people and institutions he had disputes with, including town hall, the newspaper office, and the concrete plant. Police couldn't stop the machine. It finally got stuck in a basement, and Heemeyer took his own life inside the cab.

Heemeyer was the only person who died. No one else was killed, although property damage was estimated in the millions.

Why people still remember

For many people, the story is about someone who felt that every reasonable channel had failed him. It's a story about property rights, small-town power, and what happens when ordinary people believe no one is listening. We stand with the idea behind it: fighting back against perceived injustice, getting heard, and holding officials accountable. People can disagree about his methods, and many in Granby who lived through that day see it very differently. Both are part of the story.

This page is historical commentary. It contains no instructions and doesn't encourage violence or property destruction. Use the legal channels for grievances: elections, courts, the press, and public records.