Leftist hack advocates dumping Star Spangled Banner because Francis Scott Key, like most affluent Southerns of the time, owned slaves.
American slavery completely negates any positive aspects the US has ever conveyed upon the world because American slavery was the worst case of slavery ever in the history of the world, of course, and black Americans are the most victimized and worst treated, for longer and numerically the most people affected, in the history of the world.