Liberal lion and former Pennsylvania United States Senator Harris L. Wofford died yesterday in Washington, D.C.  A Democrat, Wofford marched with Martin Luther King, served in the Kennedy White House as special assistant for civil rights, helped establish the Peace Corps, led Bryn Mawr College, and served in the cabinet of Governor Robert P. Casey.  He was 92. According to the Associated Press, Wofford died from complications from a fall taken in his Washington, D.C. apartment. The liberal intellectual was a rare breed in Pennsylvania politics.  Born in New York City, he was a lifetime advocate of national service and volunteering.  As...