All week, young people in Hong Kong have proved to be the bane of the authorities.
They are the ones who organised two of the biggest marches the former colony has ever seen.
Yesterday two million descended on the streets in protest against the government’s postponed extradition bill to China and the gradual erosion of Hong Kong’s democratic rights.
And today Joshua Wong, the student leader jailed for his part in the umbrella revolution, was released from prison, only to join the march again hours later.
The authorities here feel the heat of people power, and in any territory controlled by China that is almost unheard of.