U.S. Park Police officers search women who were arrested with a group of about 40 demonstrators in front of the White House along Pennsilvania Avenue August 22, 2011 in Washington, DC. The demonstrators were protesting against a proposed pipeline that would bring tar sands oil to the U.S. from Canada.

A woman reacts to being grabbed during a body search by a U.S. Park Police officer while she is being arrested with a group of about 40 demonstrators in front of the White House along Pennsylvania Avenue August 22, 2011 in Washington, DC. The demonstrators were protesting against a proposed pipeline that would bring tar sands oil to the U.S. from Canada.

U.S. Park Police officers arrest a group of about 40 demonstrators in front of the White House along Pennsylvania Avenue August 22, 2011 in Washington, DC. The demonstrators were protesting against a proposed pipeline that would bring tar sands oil to the U.S. from Canada.