MOVIE PREMIERE: Paul Greengrass directs this new feature film, which premieres today on Netflix, and also premieres in a couple of movie theaters nationwide. It concerns a mass shooting and its impact, but for once, the focus is not on one of the maddeningly plentiful gun tragedies in the United States. Instead, this film examines the events of, and the ensuing reactions to, the 2011 mass shooting at a youth camp near Oslo in Norway. The shooting claimed 77 deaths, and the film, 22 July, assesses the fatal onslaught by paying attention to the politicians reacting to the tragedy, the attorneys involved in ensuing lawsuits, and the survivors themselves.