In 2014, the civil disobedience movement was spearheaded by the so-called Occupy trio - legal academic Benny Tai Yiu-ting, sociologist Chan Kin-man and longtime pro-democracy advocate Reverend Chu Yiu-ming - as well as leaders from the groups Hong Kong Federation of Students and Scholarism.
A number of key figures from the movement were thrown behind bars for their roles, with some still serving time.