There were dramatic scenes in Hamburg as the G20 summit began.<br /><br />Following a night of clashes with the police, thousands of people took to the streets of the German city to express anger over the two days of talks.<br /><br />A number of police officers and emergency personnel were injured as the rally turned violent, authorities said. Fires were lit and rocks hurled in an effort to disrupt the summit. <br /><br />At least 30 protesters were arrested.<br /><br />Some called the demonstration ‘Welcome to hell’. Many attendees were from anti-Trump and anti-capitalist groups. The latter say they are angry at the potential cost to the city of the clean-up following the summit.<br /><br />Police and protesters clash in Hamburg, Germany, as Trump arrives for the #G20Summit. https://t.co/tsif0vd25e (Photos: Getty, AP) pic.twitter.com/TDQ9asAgvv— USA TODAY (@USATODAY) July 7, 2017<br /><br /><br />Parts of the city’s transport network were closed as a precautionary measure.<br /><br />Hamburg G20: protester anger over police tactics and lack of camps https://t.co/UgU3blk9h2 pic.twitter.com/VKLaDUCOib— euronews (@euronews) July 7, 2017<br />
