Somali-Canadian rapper K’naan, whose megahit “Wavin’ Flag” became an anthem for the 2010 soccer World Cup, was charged Thursday with sexual assault in Quebec City, according to local media. The 47-year-old rapper, whose real name is Keinan Abdi Warsame, is accused of having sexually assaulted a woman in her 20s in a hotel room in July 2010 when he was in the Canadian city for a music festival.