Bless the Beasts and Children is a 1971 film adaptation of the novel of the same name, by Glendon Swarthout, that was directed by Stanley Kramer, featuring Bill Mumy and Barry Robins.
The film is presented partially out of sequence the primary narrative of freeing the bison is interspersed with flashback scenes showing the boys troubled lives both at the camp, and at their homes.A bidding war broke out over the film rights, eventually won by Stanley Kramer. Kramer negotiated with Columbia Pictures for the right to produce and direct the film, which made its world premiere at the Berlin Film Festival in August, 1971, as the United States entry in the international competition. Kramer later commented on Russian reception of the film, stating that they viewed the film as a preachment against Kent State and My Lai, when he had envisioned more of a statement about the gun cult in America and how easy availability of weapons contributes to violence. ........
Source: Wikipedia