Music as a weapon?

This idea came about when I think of bands that make it a point to take a stand on issues, bands like Rage Against the Machine that can cause so much chaos that they'll get the stock market closed early, enrage thousands of people to take action, protest against governments, be banned from playing in certain cities, take the media and turn it upside down, or at least get the media saying that they're terrorists. I think it's interesting to look at how music can have such a huge impact on the way we view certain issues and become a tool to promote views or at least to entertain people. Next time you've got some music on, take a listen to the lyrics and see what points are trying to be presented. (Reggae music is also a classic form of "weaponry")

http://www.youtube.com/watch?v=wu67yo-3jfw