Anaconda Road massacre
46°01′03″N 112°31′47″W / 46.01747°N 112.52961°W
On April 21, 1920, during a miners strike in Butte, Montana's copper mines, company guards fired on striking miners picketing near a mine of the Anaconda Copper Mining Company, killing Tom Manning and injuring sixteen others, an event known as the Anaconda Road massacre. His death went unpunished.