A protester wears a mask with a mobile phone with anti-China and pro-democracy messages on its screen during an attempt of protest in the Causeway Bay district of Hong Kong. Activists and protesters have hit the streets of Hong Kong in a reaction to the National Security Law imposed on the autonomous region by the central government in Beijing, on July 1st, 2020. The date also marked the 23rd anniversary of the handover of the former British colony to China. A big effective of riot police were deployed to prevent that the protesters marched on the traditional parade.