Officials said they would spend $4.7 million to boost tourism on the back of the Games and restore the Olympic host city’s tarnished image. Culture, media and sport secretary Jeremy Hunt says the publicity campaign aims to “set the record straight” and show the world that the riots do not “stand for what the U.K. is all about.”

The servers that house Twitter, Facebook and BlackBerry Messenger don't have a political, social or legal agenda. Their job is simply to transmit what people post and deliver it to people who want to see it. But the same technologies can also be used to espouse unpopular causes or even rally people to anti-social, illegal or destructive acts.

Iranian media affiliated to the Islamic regime have been accused of using library images from different times and locations in Britain and other parts of the world to portray the UK riots as "the uprising of the oppressed against the British monarchy".

The timing probably couldn’t have been much worse. Almost a year to the day until the 2012 Olympics Games begin in London, the world was treated to images of rioters smashing storefronts and setting buildings ablaze in the capital and beyond.

Recent riots in the Middle East and North Africa will not be repeated in China as the government is doing a good job and taking people's demands seriously, a key political adviser has said.