David Rovics - Behind the Barricades (2003)

http://www.mediafire.com/?kwlnzm0j5ga

Radical left-wing protest music, in the tradition of Woody Guthrie, Phil Ochs, etc., but about contemporary issues like Iraq, globalization and the exploitation of South American countries. Strong anti-corporatist, anti-elitist, and anarchist themes.
David Rovics allows free downloading of all his music on his website, saying:

"Feel free to download these songs. Use them for whatever purpose. Send them to friends, burn them, copy them, play them on the radio, on the internet, wherever. Music is the Commons. Ignore the corporate music industry shills who tell you otherwise. Downloading music is not theft, you're not hurting anyone, I promise."

Even if you don't agree with his politics, he shows that intensely political folk music is not just an anachronism from the 60s. Strong, singable melodies; inspiring lyrics; and energetic acoustic guitar. Worth checking out. This is a best of, and a good place to start.

http://www.davidrovics.com/
http://www.last.fm/music/David+Rovics