The piercing traumas of school shootings, when they’ve made it into the movies, have seldom carried quite the right tone. Even the best intentions in wading into such tragic horrors can come off as insincere, even exploitive.
“Mass,” Fran Kranz’s meditative chamber piece, is a sober and wrenching exception. Kranz’s film, the veteran actor’s first as writer-director, is about two sets of parents who meet, cautiously and with still raw wounds, to talk six years after a school shooting that brought their families together.
Gail (Martha Plimpton) and Jay (Jason Isaacs) lost their son in an attack by the son of Richard (Reed Birney) and Linda (Ann Dowd, ), who also died that day. Their meeting, in a nondescript church across from a broad field and snow-dusted mountains, makes up…