HAMBURG, GERMANY - JULY 05: Performance artists covered in clay to look like zombies walk trance-like through the city center on July 5, 2017 in Hamburg, Germany. In a two-hour show hundreds of actors took part in a creative public appeal for more humanity and self-responsibility ahead of the upcoming G20 summit. The G20 economic summit takes place in Hamburg July 7-8. (Photo by Sean Gallup/Getty Images)
