What did bostonians do to anthony burns

The law was fiercely resisted in Boston, and the case attracted national publicity, large demonstrations, protests and an attack on US Marshals at the courthouse. Federal troops were used to ensure Burns was transported to a ship for return to Virginia after the trial. He was eventually ransomed from slavery, with his freedom purchased by Boston sympathizers. Afterward he was educated at Oberlin College and became a Baptist preacher, moving to Upper Canada for a position