4/5 stars “We were taught to treat Asians like they were less than human,” says Allen Nelson in Mr. Nelson, Did You Kill People?, a true-life drama about a former US Marine faced with a reckoning. Screening in competition at this year’s Venice International Film Festival, this often powerful work is based on Nelson’s memoir of the same name. Somewhat surprisingly, Shinya Tsukamoto, the cult Japanese director behind Tetsuo: The Iron Man (1989) and Bullet Ballet (1998), adapted it in what is only...