December 4, 2008 5:34 pm Nunez's Son Pleads Not Guilty Four defendants are charged in the stabbing death of a college student in San Diego, and the son of Fabian Nunez is accused of trying to cover up the crime. US & World Videos 4:00 Firecrackers thrown at pro-Palestinian encampment during protester clash at UCLA 1:06 Interesting facts you never knew about The PGA Championship 1:45 NYPD enters Columbia University in riot gear to clear protest 6:17 Workers' comp claim denied after nurse's coworkers fail to give CPR 3:25 Little or no reaction from California officials on UCLA protest