Times: The Haitian capital was paralysed by food riots yesterday as the United Nations gave warning that soaring food prices were spurring unrest around the world. Rioters returned to the streets in Port-au-Prince a day after UN peacekeepers had to fire rubber bullets to prevent hungry Haitians from storming the presidential palace. Columns of thick smoke rose over the city as demonstrators, demanding that the government take action over the rising price of foodstuffs such as rice, beans and …