Nicky’s Family, a new film by Slovak director Matej Mináč, tells the story of a 20th-century hero you probably don’t know, but should: A British stockbroker named Nicholas Winton who rescued nearly 700 Jewish children from Nazi-occupied Sudetenland. Through means ranging from straightforward to ingenious (including romancing a suspected Nazi agent), Winton, who was stirred by an encounter with Czech refugees […]