Morocco’s glittering Mawazine international music festival wrapped up recently with performances by Mariah Carey and Lenny Kravitz, after nine days of showcasing the North African kingdom’s cool factor - even as dissident Moroccan musicians are imprisoned for their anti-establishment lyrics. Just a week before the festival began, Human Rights Watch slammed Morocco for sentencing a rapper to a year in prison for lyrics deemed insulting to police - a common theme in rap music elsewhere in the world.