Just out on Netflix, Paul Greengrass's new film, 22 July, takes its title from the date in 2011 on which a lone maniac named Anders Behring Breivik murdered seventy-seven people in Norway. But only the first third or so of the movie covers the actual events of that date – the massive explosion Breivik set off in a parked panel truck outside the major government building in Oslo, killing eight, and the shootings he then carried out at the ruling Labor Party's annual summer youth camp on the nearby island of Utøya, which took sixty-nine lives. The second third of...