Filmmaker Carma Hinton talks about "The Gate of Heavenly Peace" a film she co-produced with her husband Richard Gordon. The film chronicles the Chinese democracy movement that began in the spring of 1989 and ended in the Tiananmen Square massacre. The film will show on PBS' Frontline program on Tuesday, June 4, 1996 which marks the 7th anniversary. Hinton and her husband run a production company called Long Bow Group, Inc in Brookline, Massachusetts.