Billy Luther studied filmmaking at Hampshire College, where he developed an affinity for documentary, but he says that much of his real education happened working in various organizations, including the National Museum of the American Indian and Third World Newsreel. Luther, who belongs to the Navajo, Hopi, and Laguna Pueblo tribes, has also won numerous grants and fellowships, including a Tribeca Film Institute Media Fellowship and Sundance Institute’s Native Initiative/Ford Foundation Fellowship. Luther screened his first feature film, Miss Navajo, at the Festival in 2007, and is back this year with a new documentary, GRAB, a portrait of contemporary life in the Laguna Pueblo tribe in New Mexico, which honors family members in an annual tradition that involves throwing food and gifts from the rooftops of their homes to the community that gathers below.