Pipedown was a hardcore punk band from Northern California with radical leftist lyrics. Starting in Grass Valley, California in 1997, their lyrics are often reminiscent of eco-anarchism, especially since they recommended readings such as the Unabomber Manifesto: Industrial Society and its Future (Theodore Kaczynski) and Deep Ecology for the 21st Century (George Sessions) on their first album Enemies of Progress. In 2003, Pipedown released Mental Weaponry, again on A-F Records.