<p>Protesters set cars on fire with flares during the second day of the G20 Summit in Hamburg, Germany, on July 7. At the start of the summit a day earlier, police used water cannon in an effort to disperse demonstrators.</p><p>Heavy security was present from the outset, as police on Thursday warned protesters</a> their planned rally would not go ahead unless people removed face masks.</p><p>This video was taken along the Elbchaussee in Hamburg. Cars were ablaze and citizens in the streets were trying to extinguish the fires. Credit: YouTube/fasttorwa via Storyful</p><br />
