 The children were compared to the Hogwarts school choir from the "Harry Potter" series by "The New York Times".Madonna started singing the song while holding the amplifier in her hand.The backdrop imitated the song's message by displaying a procession of images of environmental devastations like fires, nuclear power plants, suffering animals—which altered with images of visionary leaders like Nelson Mandela, Aung San Suu Kyi, Mahatma Gandhi, and current political leaders like George W. Bush, Gordon Brown and Nicolas Sarkozy.