Arrests and rising tension as Hong Kong prepares for protests on China's national day

Crackdown begins on high-profile activists in Hong Kong and the mainland ahead of 70th anniversary

Authorities have arrested at least two high-profile activists as Hong Kong prepares to mark the 70th anniversary of the founding of the People's Republic of China on Tuesday.

A large demonstration organised by the group Civil Human Rights Front, which has organised previous mass protests, has been banned by the police, but protesters have vowed to turn out on 1 October to show their anger and frustration at the erosion of rights under Chinese rule.