Gabriela Cowperthwaite / Courtesy of Magnolia Pictures

The executives at SeaWorld must be spitting nails and circling up a wagon of lawyers upon the release of the excoriating documentary Blackfish

Director Gabriela Cowperthwaite’s penetrating and sad look inside the training and treatment of killer whales at SeaWorld and other marine parks delivers such sharp blows to the industry that it would be cruel and unusual should anyone who sees the film actually ever visit one again.