John Galliano set trends in fashion — and cancel culture. The once A-list designer sprung to fame in the 1980s with his eponymous line that earned him fans including Rihanna, Nicole Kidman, Charlize Theron, Kate Moss and Natalie Portman, along with stints at Givenchy and Dior. But he was blacklisted in 2011 after he was caught on video making racist and antisemitic remarks, including praising Hitler at a Paris bar. His exile and gradual return is examined in the new documentary “High & Low: John Galliano,” in theaters now, by Oscar-winning filmmaker Kevin Macdonald. 10 Filmmaker Kevin Macdonald said persuading...