In a second video posted Wednesday, Scott Brown supporters' war whoops are heard as Brown criticizes Elizabeth Warren's claims of Native American heritage. Brown apologized for staff members shouting war whoops and performing tomahawk chops during a rally days earlier in Boston's Dorchester neighborhood.
Central American families walk through dense brush after illegally crossing the Rio Grande river into the United States from Mexico, in Fronton, Texas, on Oct.18.
Democrats launch their case for President Obama's re-election as his nominating convention opens on Tuesday. They plan to use the convention to highlight the party's diversity, featuring black, young and Hispanic speakers to appeal to the voting blocs that helped Obama to a comfortable victory in 2008.