. >> this footage shows student joshua wong returning to the protest after being questioned by the policewong is the leader of scholarism, a pro-democracy group consisting mostly of teenagers. >> over six months on from the umbrella revolution, wong's group shows no sign of weakening and has stepped up its activism. >> now that the hong kong federation of students has split, wong's role has become much more significant. these days, his schedule is set by the minute. >> as wong's workload increases, scholarism is training other members to carry the torch. agnes, the sao, founds fondly known as the goddess of scholarism is one of them. during the umbrella revolution she slept out in tents on streets for days on end working as the group's spokeswoman. but suddenly in the middle of the unrest, she quit her post. tsao first started working as the group's spokeswoman after becoming a member in 2012. she's currently the host of an online program hosted once a week and also gives lectures. tsao says that at one point, she had considered leaving scholarism all together. >> in the end, tsao decided