Need help finding spanish music Like this?

Okay. So I like music that is socially concious, or music that has
deep meanings. I want to find spanish music like this. Like I listen
to things like Immortal Technique(Rap), Talib Kweli(Rap), Rise
Against, Tool, some Metalica songs, Megadeth, A perfect Circle, etc
etc etc.

Anyways, I had always thought that spanish music was festive annoying,
or love songs that I just don't want to listen to because I just don't
care about a dude and his girl problems or parties or any of that
stuff. Same reason I don't like mainstream english music. So
anyways...after I found this song by Immortal Technique I was
wondering if its possible that there are some spanish artists that
actually sing stuff that I could listen to.

Heres the song I'm talking about:

http://www.youtube.com/watch?v=zJR3iTZINOYfeature=related

Anyways. Does anyone know any spanish music that would be like that? I
speak spanish fluently btw, its my mother tongue.

Thanks for your time :D.