A new video making the rounds on social media captured chaotic scenes in Hong Kong on Sunday, as security forces fired volleys of tear gas to disperse protesters during a rally.
The footage shows dozens of demonstrators frantically running from white clouds of gas, many covering their eyes and mouths.
Edwin Lee, who shot the footage, explains on his Facebook page he was listening to a speech by Democratic Party leader Martin Lee on Sunday when volleys of tear gas hit the crowd.
"I'm not trying to be a hero or anything," Lee explains, "but if you haven't experienced tear gas before this is what those students have been facing all day and night. Pretty much like searing pain in the eyes, lungs on fire and instant sun burn on your skin."
Pro-democracy protests in Hong Kong gained new traction last week with a class boycott by university and college students. The protests intensified over the weekend and on Sunday, police began using tear gas to disperse protesters from the financial district. While demonstrators accuse the security forces of employing violent tactics against peaceful protesters, the assistant police commissioner defended the corps' actions and claimed protesters had charged cordon lines.
The protesters are rallying for more democratic rights and are demanding that Hong Kong's top leader, the chief executive, would be elected through popular vote. Activists have also called on the current Chief Executive, Leung Chun-ying, to resign.