What is the main conflict in Children of a Lesser God by Mark Medoff?

Children of a Lesser God examines communication problems, psychological stress, and emotional abuse, but does so without the threat of physical violence or guns. The play earned Medoff a Tony award in 1980. In 1986, a film version of the play, written by Medoff, was released; the film starred William Hurt as James and Marlee Matlin, who earned an Academy Award for her performance as Sarah.