Markos Moulitsas Zúniga is Chicago-born (eerily, on Sept. 11, precisely thirty years before the 9/11), but spent the 1970s in El Salvador until 1980, when his family fled due to the civil war. One of his heroes is Archbishop Oscar Romero, along with Cesar Chávez and his late father.
He's the blogger responsible for Daily Kos (political analysis and other daily rants on the state of the nation). But Zúniga is not just blogging for his friends--his site is consistently rated one of the top two or three political blogs, and shows up in the top 50 blogs to be found anywhere on the internet (well, okay, we all think the US is the center of the universe.)
Also of great importance, the guy has time to write his own music for piano. He has a couple of dozen songs posted in MP3 format here. I´ve listened to a couple, and they're quite good, in that meditative, New Agey genre (at least, what I've heard so far.) Hey, I used to sing in the Texas Boys Choir with Danny Wright, so my opinion should count for something!