The BBC has been following his life since the early days of the national security law.

As chairman of the Journalist Association, he has long been seen as a possible target.

Those found guilty of violating the national security law could face life in prison.

He's a fierce defender of journalist rights.

He was an editor of one of the last independent media outlets in Hong Kong, "Stand News".

In December, 2021, "Stand News" was raided by the National Security police, senior editors were arrested and detained.

The charge? Publishing seditious material.

On that morning, national security police came to Ronson's door.

Ronson was taken away for questioning, then released, but his colleagues remain in custody.

It's been months since we last heard from Ronson.

He was recently arrested after a confrontation with the police while reporting.

Ronson has unexpectedly been summoned to Mongkok police station; plain-clothes police look on.

Since the national security law was introduced, pro-democracy media outlets have been forced to close, (and) schools have been detained.

It's had a chilling effect on the press.

At times, I've suspected I've been a target of the police.

But it's Hong Kong journalists that face a significant threat.

Hong Kong's position in the World Press Freedom Index has plummeted since the introduction of the law.

Ronson is released.

He's charged with obstructing the police; he'll face trial and could be sentenced to prison time.

Hong Kong's pro-democracy movement was heavily influenced by the events in Beijing in 1989.

On June 4th, 34 years ago, hundreds, possibly thousands, died when the People's Liberation Army put an end to student protesters in Beijing.

Today is the anniversary.

Hong Kong was once the only place on Chinese soil that publicly commemorated the dead.

Today, the police threaten to arrest anyone who attempts to mark the day.

Some are determined.

Flowers for the dead.

A political statement, a disturbance to public order.

Ronson is reporting; he's just returned from a six-month fellowship in the UK.

He's returned to Hong Kong to face trial.

A journalist has been detained.

It struck a chord with Ronson.

I just can't say that we can try our best to survive.

I just... I come back; I'm just... say that I miss Hong Kong too much.

I love Hong Kong too much.

I never think about future.

Maybe jail, maybe prosecution, maybe something like that.

But I still think that I res... I take responsibility for my decision.

So, I... I stay here.