Thousands of Nigerians took to the streets across Africa's top oil producing nation on Monday, launching an indefinite nationwide strike to protest against the axing of fuel subsidies. Shops, banks and petrol stations were shut and the highways into the main commercial city of Lagos, usually clogged with rush-hour traffic, were empty. Production of Nigeria's average two million barrels of crude oil a day carried on as normal despite the strike, sources at two international oil companies and the state firm told Reuters. Thousands of people gathered outside Labour house, in Yaba, the downtown market area of Lagos, waving union flags, from where they started marching and shouting "solidarity forever", closely watched by armed police in riot gear.