Smiling as they pose for Facebook photographs, two black men have been charged with murdering two Chinese students

Pictures of Bryan Barnes, 20, and Javier Bolden, 19, emerged as they appeared in court accused of killing electrical engineering students Ming Qu and Ying Wu, both 23. The second-year graduate students were gunned down during a botched robbery near the University of Southern California campus. Barnes and Bolden, who are also charged with the attempted murder of another man, could face the death penalty if convicted.