I love music that's full of righteous anger. I found a quality band recently that fueled in me a fist-clenching, rallying cry against the system... like when I first heard 'Rage Against the Machine'.
They rage against war and injustice but also seem to be doing something about it with their non-profit organisation that aims to connect social change with music (www.flobots.org)
Check out this video and their other songs on youtube. Album's out in September...you heard it here first!