Tens of thousands of masked protesters are clashing with police in Hong Kong and have forced the government to delay a debate on a highly contentious extradition bill . The government says the legislation is necessary to plug a loophole exposed by a grisly murder case in Taiwan and to prevent Hong Kong becoming a safe haven for fugitives, but critics fear Hongkongers and foreigners in the city risk being sent to mainland China to face unfair trials. Today’s protest follows Sunday’s march, the biggest since the 1997 handover of Hong Kong from Britain to China. Follow our live blog below.