High Quality Content by WIKIPEDIA articles! Ossie B. Brown (March 19, 1926 – August 28, 2008) was a Baton Rouge Democrat who served two six-year terms as district attorney of East Baton Rouge Parish, Louisiana, from 1972—1984. In 1970, he successfully defended United States Army Sergeant David Mitchell in the My Lai Massacre cases. Brown was also a talented musician and an active Baptist layman.