US Students Plan Mass Walkout on Anniversary of Columbine Massacre
Students across the United States will march Friday to honor the memory of the victims of 1999's Columbine shooting. Energized by the momentum for stricter gun control since February's mass shooting at a Florida high school, young people have led the charge for change. Friday will mark the latest salvo in their nationwide calls for change. Arash Arabasadi and Jill Craig contributed to this report.