At least 370 people have been arrested in Hong Kong since Wednesday on the basis of the new security law that came into effect on July 1. At least ten people have been officially charged.

The United Nations Human Rights Office is concerned with the way in which the "vague and overly broad" new law they say is applied immediately after its adoption. This is feared to lead to arbitrary decisions and arrests.

A man who entered a group of police officers with a motorcycle has been charged with terrorism, among other things. The man carried a protest sign with the slogan "Free Hong Kong, revolution of our time". This slogan was banned by the government on Thursday because it would call for separatism and undermining of the government.

On Wednesday, the day the security law went into effect, dozens of people had already been arrested, the Hong Kong authorities reported.

Prominent activists are leaving Hong Kong

There were no protests on Thursday and Friday. There may be fears of demonstration among activists because of the law. Demosisto, a prodemocratic group, was dissolved a few hours after the passing of the law.

Some of the group's prominent activists are said to have left town. One of them, Nathan Law, tells BBC News to continue his activism from abroad.

The People's Congress of China adopted the controversial security law, which gives Beijing more influence in Hong Kong, unanimously on Tuesday. The law allows China to crack down on opposition politicians and activists. They therefore fear that the democratic freedoms that the city enjoys will be broken down. In addition, the law would not distinguish sufficiently between violent and non-violent situations.