David Rovics
A song about an evil practice known as hydraulic fracturing, which is ruining lives, land and water (not to mention a lot of private property) throughout the US and Canada, including most of the state of Pennsylvania.
David Rovics makes lots of good material available online, including a blog of his travels, 200+ songs for free (over a million downloads), pirate songs for kids and a chronicle of activist history. And he’s on Facebook and Twitter.