Washington (CNN) -- Members of the U.S. Civil Rights Commission shouted at each other Friday over the Justice Department's decision to drop most of the charges in a 2008 incident in which black militants confronted voters at a Philadelphia, Pennsylvania, polling place, leading to charges of voter intimidation. Conservative commission members accused the Justice Department of "stonewalling" the commission's investigation into the dismissal, and called a Justice Department's response to requests for information "breathtaking and insulting." A liberal commission member, in turn, dismissed those complaints as the "last gasps of a conservative majority of this commission." At the end of...