Nigerian protesters paralysed Africa’s biggest city Lagos on Monday, blocking the airport as widespread demonstrations sparked by police brutality spiralled.Hundreds of mainly young protesters waving flags and placards marched outside the international departures terminal in the economic hub.The wave of demonstrations began some 10 days ago when crowds took to the streets over abuses by the police’s loathed Special Anti-Robbery Squad (SARS).The outpouring of anger forced the government to scrap…