A pupil smiles as she wears on her forehead a green and white bow tie, the colors of Nigeria, on October 1, 2015  as part of Nigeria's independence anniversary celebrations, in Lagos. Nigeria's President Muhammadu Buhari on Thursday called for an end to "unruly behaviour" in the country, saying progress could not happen without a change in citizens' attitudes. The call, made in his first Independence Day address as civilian president, will likely remind some of his time as military ruler in the 1980s, when he cracked down on so-called "indiscipline". AFP PHOTO / PIUS UTOMI EKPEI        (Photo credit should read PIUS UTOMI EKPEI/AFP/Getty Images)