Occupy the London Stock Exchange - Saturday 15 October.In London about 1,000 protesters massed outside St Paul's Cathedral in a bid to occupy the London Stock Exchange in the nearby Paternoster Square. But the square was closed off by police and private security and the demonstration remained focused on the steps around the cathedral after attempts to enter failed. Police moved in to kettle the crowd and three people were arrested.More than 950 demonstrations against the global financial system and corporate greed are being held in more than 80 countries around the world today. Inspired by the huge rallies organised by 15-M movement in Spain and more recently Occupy Wall Street, tens of thousands of people have taken to the streets from as far afield as Seoul and Rome