For the seventh consecutive weekend, protesters in Hong Kong gathered on Sunday to demand an independent investigation into excessive police force used during previous demonstrations against the controversial extradition bill.<br />They also demanded the release of protesters who were arrested during previous protests.<br />Protesters marched towards the Liaison Office, which represents China's Communist Party-led central government within the city.<br />They threw eggs and splattered black ink on China's national emblem in the front of the Liaison Office.<br />Police responded by using tear gas to disperse the crowd.<br />According to organizers, 430-thousand people participated in Sunday's march.<br />