A group of people in Iran got themselves arrested after making a video to the tune of Pharrell Williams’ “Happy” and posting it on YouTube. It became a hit, bringing it to the attention of the morality police. The Iranian police chief said that the vulgar clip, showing three unveiled women, had hurt public chastity. Yesterday a political commentator, Kambiz Hosseini, tweeted about it, boosting a #FreeHappyIranians hashtag campaign to demand their freedom. Around 13 people are believed to have been arrested in connection with the video. It is believed that the participants in the video were released this morning, but the director is still being held.