Documentaries: \"Professional Revolutionary: The Life of Saul Wellman\" and \"First Amendment on Trial: The Case of the Detroit Six.\" Produced by Wayne State University professor Ron Aronson and Judith Montell, April 28-30, at the Insight Screening Room in Southfield. Show times are provided. Down Syndrome: Dr. Victor Tybuleqicz, head of research team on Down syndrome at the National Institute for medical Research in London, will present his findings at a lecture, 6 p.m. May 2 at Wayne State\'s Community Arts Auditorium.