Soft Power, the thrilling new musical by David Henry Hwang and Jeanine Tesori at the Public Theatre, wears many hats: it’s a funny and touching East-meets-West love story, a postmodern Rodgers and Hammerstein–style book musical with multiple narratives and commentary, and a dazzling celebration of the rhapsodic power of Broadway song-and-dance. But its most potent identity is as a cri de coeur from playwright Hwang on the violence he suffered before the election of Donald Trump and the palpable fear that Trump’s white-supremacist presidency has instilled in non-white Americans.