Okay, now somebody tell them it was written by a socialist and watch their brains melt.
Edit: Somehow I misread and thought this was about the Pledge of Allegiance. As has been pointed out below, the Star Spangled Banner was written by racist, slaver Francis Scott Key.
It was written by Francis Bellamy, a Christian Socialist pushed out of his post as a Baptist minister for delivering pulpit‐pounding sermons on such topics as “Jesus the Socialist.” Bellamy was devoted to the ideas of his more‐famous cousin Edward Bellamy, author of the 1888 utopian novel Looking Backward. Looking Backward describes the future United States as a regimented worker’s paradise where everyone has equal incomes, and men are drafted into the country’s “industrial army” at the age of 21, serving in the jobs assigned them by the state.
Actually, Francis Scott Key wrote the Star Spangled Banner, not the Pledge of Allegiance. But, yes, I'm sure they love him for being a racist and slaver.