Nigerian workers have begun a national strike over the end of fuel subsidies, an action which has caused prices to rise in many areas of the country. Many businesses and services were closed, and the strike has the potential to shut down ports and disrupt crude oil production. The protests, organized by the country's largest union federations, are an effort to get the government to reverse the decision to end the subsidies. The government has said that it was necessary for the economic health of the country.
See "Nigerian Workers Start Strike That May Disrupt Oil Exports", Chris Kay and Elisha Bala-Gbogbo, Business Week, January 8, 2012