They are not protesting a song!  How obtuse can you even pretend to be?  They are protesting the clearly expressed racism, sexism and obscenity of our "president," the racism inherent in our Nation, the injustices and persecutions perpetrated against minorities of all sorts in our "land of the free."  If you can't understand that, you must be Caucasian, privileged and somehow related to an ostrich, with your head buried firmly in the lily-white sand.