Swift, Perry, Minaj, Gaga, Madonna, Beyoncé, Spears, Cyrus and Rhianna: women who are only allowed to be one thing. — People are strange. If Madonna kicked a puppy’s head off, her die-hard fans would emphatically exclaim that the puppy had it coming. At the same time, if Beyoncé creates a song about what is happening in America, a million white people lose their minds. We develop instant and sometimes vehement…