HAMBURG, GERMANY - JULY 07: A black cloud moves through the air as demonstrators walk in the street and stand on the rooftops while a fire burns in town during an anti-G20 protest on July 7, 2017 in Hamburg, Germany. Authorities are braced for large-scale and disruptive protests as Leaders of the G20 group of nations arrive in Hamburg for the July 7-8 G20 summit. (Photo by Leon Neal/Getty Images)
