The Boston Massacre occurred on March 5, 1770. A squad of British soldiers, come to support a sentry who was being pressed by a heckling, snowballing crowd, let loose a volley of shots. Three persons were killed immediately and two died later of their wounds; among the victims was Crispus Attucks, a man of black or Indian parentage. The British officer in charge, Capt. Thomas Preston, was arrested for manslaughter, along with eight of his men; all were later acquitted. The Boston Massacre is remembered as a key event in helping to galvanize the colonial public to the Patriot cause.