By Kirsty Wark
Producer, BBC Newsnight
Presented by Kirsty Wark
Imagine a knock on the door after you have been on the internet, blogging, and the next moment you are under arrest. Not the latest BBC drama - but a real life one. Amnesty International today launched a campaign in defence of internet bloggers in many countries - including China, Tunisia and Iran who have been arrested for expressing views which have upset their governments.
But how have they been tracked down? It turns out that they have been turned in by major internet providers such as Yahoo and Microsoft, who have supplied foreign governments with the information they need to pursue them. We'll be asking these companies whether they believe in free speech.
Those of you for whom the Newsnight email is an essential part of your daily diet will have spotted that the debate I heralded yesterday, between the Head of BBC TV News Peter Horrocks and the shadow Defence spokesman Dr Liam Fox over Newsnight's film from Helmand province, and its interview with the Taleban spokesman, never materialised on last night's programme.
Dr Fox, who called the film "obscene" was not available - but is so tonight, and so I am sure there will be a robust exchange of views given that the BBC has vigorously defended the film saying, "Some believe it is disloyal to our armed forces to film the enemy. But if we agreed not to show them, isn't that just a small step away from censorship and pro-government propaganda?"
And the Archbishop of Canterbury Rowan Williams is in the news today opining that it would be unwise to try to ban any kind of religious dress or symbols in our society - he was speaking on his return from China where he examined the state of religion, and its architecture - in a country where there has officially been no religion for more than 60 years. We filmed him along the way, and you can see that journey tonight.