In January of this year, Mr. Filin suffered burns to both of his eyes after a man threw acid in his face one evening outside his home. His attacker, clad in a wooly hat and scarf, threw the sulfuric acid out of a glass jar. “The burning was so awful,” Mr. Filin later said to The New Yorker. “I started shouting, ‘Help! Help! I need help!”HANDOUT/Reuters