China wields patriotic education to tame Hong Kong's rebellious youth

Alarmed that so many young Hong Kongers showed hostility to the ruling Communist Party, the leadership has turned to re-education - a tried and tested tactic of the Party through decades of extinguishing domestic opposition.

Cua Chiu-fai is on a mission to rid Hong Kong's classrooms of what he sees as poisonous anti-China bias. His soldiers: mainly parents. He has recruited hundreds of mothers and fathers to monitor and report on teachers deemed guilty of filling their students with hate for China and urging them to take to the streets in protest.