Demonstrators in White Hall get roughed up by the security of Prime Minister Cameron. He was talking business with the king of Bahrain on a visit to the UK.

http://www.guardian.co.uk/politics/2012/aug/24/david-cameron-bahrain-king-talks?CMP=email

Bahrain has been in the midst of an uprising since early 2011. The king responded to demands for reform by knocking down Pearl Roundabout, the centre of the demonstrations. Over half of the tiny island's population had been demonstrating in the streets for change. The number of dead protesters is greater in proportion to the size of the population than the number killed by security forces during the Egyptian revolution. Violence continues to this day, with once peaceful protesters now responding to crackdowns. Many political prisoners remain in prison. Nabil Rajab, a prominent activist, was recently jailed for 3 years for partaking in peaceful demonstrations demanding reform.