This month’s 50th anniversary of Stonewall, the Greenwich Village uprising that launched the modern LGBT movement, was always going to be complicated. What may seem like a straightforward chance to celebrate progress actually masks a fault line that has divided our movement since its start: whether our goal is equality or liberation, a fight for the right to be treated like everyone else or the freedom to be authentically ourselves. Do we seek belonging in the world as it is (including the military, marriage and parenting) or the chance to transform the world, by throwing off repressive norms, into a...