You can hear them blow if you lean your head out far enough.

Politics and rock'n'roll.

Neil Young - non-political, for the most part.
Bob Dylan - non-political, for the most part. His protest songs suck, by and large.
Roger Waters - highly political; decently successful.
Ray Davies - non-political, really.
Rage Against the Machine - easy targets. Highly political; highly crap.
Radiohead - non-political, for the most part.

Good political songs:
"Southampton Dock", Roger Waters
"Rockin' in the Free World", Neil Young
"Fortunate Son", Creedence Clearwater Revival