Pamela Geller is an American anti-Muslim, far-right political activist, blogger and commentator. Geller promoted birther conspiracy theories about President Barack Obama, saying that he was born in Kenya and that he is a Muslim. She has denied genocides where Muslims were victims, including the Bosnian genocide and the Rohingya genocide.

Park51 was a development originally envisioned as a 13-story Islamic community center and mosque in Lower Manhattan, New York City. The developers hoped to promote an interfaith dialogue within the greater community. Due to its proposed location, two blocks from the World Trade Center site of the September 11 attacks, the proposed building was widely and controversially referred to as the "Ground Zero mosque".