FILE - In this Dec. 3, 1989 file photo Bernardine Dohrn, former leader of the radical, anti-war movement Weather Underground is escorted by federal authorities after surrendering at Cook County Courthouse in Chicago, Ill. Dohrn is one of the speakers who will participate in a two-day symposium starting Dec. 4, 2009, commemorating the sesquicentennial of abolitionist John Brown's burial at his former homestead just outside this tourist village in northern New York.
(AP Photo)