At MetLife Stadium on a September evening, rapper Macklemore used his opening slot before Ed Sheeran's concert to voice support for Palestinian freedom — a moment that quickly became a flashpoint in the long-running American struggle to distinguish political advocacy from prejudice. Jewish fans and celebrities pushed back, not merely against the message, but against the setting: a ticketed entertainment space where audiences had made no agreement to receive political witness. The incident asks an old question in a new arena — who owns the stage, and what obligations does a performer carry towa