During the 2017 G20 summit , which took place in Hamburg from 7 – 8 July that year , protestors clashed violently with the police in the Sternschanze area and particularly around the Rote Flora . On 7 July , several cars were set on fire and street barricades were erected to prevent the police from entering the area . In response to that , the police made heavy use of water cannons and tear gas in order to scatter the protestors . However , this was met with strong resistance by protestors , resulting in a total of 160 injured police and 75 arrested participants in the protests
2017 G20 summit
2017 G20 Hamburg summit
Hamburg