Subscribe to Channel 4 News: http://bit.ly/1sF6pOJ
Asia correspondent John Sparks hears allegations from a Triad gang-leader that the Hong Kong student protesters were infiltrated by agent provocateurs. Jimmy Lai, a predominant supporter of the movement, also says that it is time to retreat.
More on the Hong Kong protests: http://bit.ly/1wjOqhJ
Top stories: http://bit.ly/1wdbIG1