Writer Zinzi Clemmons quit contributing to Lena Dunham’s newsletter “Lenny Letter” after the “Girls” creator faced harsh criticism for defending Murray Miller, who was accused of sexual assault by actress Aurora Perrineau. In her public resignation letter, Clemmons accused Dunham of “hipster racism,” and called on other writers of color to stop contributing to the newsletter as well. “As a result of Lena Dunham’s statements, I have decided that I will no longer write for Lenny Letter,” Clemmons said in a Facebook post on Saturday. “For all you writers who are outraged about what she did, I encourage you to...