Fifteen years after the Oklahoma City bombing, the United States is experiencing an antigovernment climate remarkably similar to the atmosphere that preceded the attack, a Southern Poverty Law Center expert told an audience gathered in Washington, D.C., for a panel discussion and a keynote address by former President Bill Clinton.

April 19 marks the 15th anniversary of the bombing of a federal building in Oklahoma City - the worst single act of domestic terrorism in our nation's history and a grim reminder of the fruits of right-wing radicalism. The anniversary comes as the antigovernment militia movement is experiencing a resurgence.