After serving more than 20 years in prison for a crime he says he didn't commit, L.A. artist Mr. Wash had his sentence commuted by President Barack Obama. Now he's on a mission to build a community center in Compton.

<p>After serving more than 20 years in prison for a crime he says he didn't commit, L.A. artist Mr. Wash had his sentence commuted by President Barack Obama. Now he's on a mission to build a community center in Compton.</p>