Turkish riot police have stormed Taksim Square in Istanbul, breaking through barricades set up by protesters who have occupied the area for the last twelve days. Images from earlier this morning show police firing tear gas and water cannon at hundreds of protesters who have been staging demonstrations against plans to redevelop the adjoining Gezi park. Activists decked out in gas masks responded by throwing stones, fireworks and petrol bombs. Many have fled to Gezi Park where they have been camping. They reportedly chanted