Janet Mock first heard the word “māhū,” a Native Hawaiian word for people who exist outside the male-female binary, when she was twelve. She had just moved back to Oahu, where she was born, from Texas, and, by that point, Mock knew that the gender she presented as didn’t feel right. “I don’t like to say the word ‘trapped,’ ” Mock tells The New Yorker’s Hilton Als. “But I was feeling very, very tightly contained in my body.” Since coming out as transgender publicly, Mock has emerged as a leading advocate for trans people; she is the author of a best-selling memoir and the first trans woman of color to be hired as a writer for a TV series, Ryan Murphy’s FX series “Pose.” Plus: MSNBC’s Chris Hayes, the youngest prime-time host for a major cable-news channel, on the psychic toll of covering the news in Donald Trump’s America.