Jon Mayer (L), a representative of the US embassy in Nigeria, speaks to protesters in Abuja February 11, 2010. Demonstrators on Thursday took to the streets to protest against Nigeria's inclusion on a 14-strong list of countries where passengers departing for the United States are to be subject to especially rigorous pre-flight screening. The inclusion was made by Washington soon after a Nigerian passenger Umar Farouk Abdulmutallab tried unsuccessfully to detonate explosives hidden in his underwear on a Dec. 25 flight as it approached the U.S. city of Detroit. REUTERS/Afolabi Sotunde (NIGERIA - Tags: CIVIL UNREST SOCIETY POLITICS)