A pro-democracy demonstrator gestures after police fired tear gas towards protesters near the Hong Kong government headquarters on September 28, 2014. Police fired tear gas as tens of thousands of pro-democracy demonstrators brought parts of central Hong Kong to a standstill on September 28, in a dramatic escalation of protests that have gripped the semi-autonomous Chinese city for days. AFP PHOTO / XAUME OLLEROS        (Photo credit should read XAUME OLLEROS/AFP/Getty Images)