That's a video by the Canadian band Blurred Vision. The band is fronted by two Iranian brothers, who got permission by Pink Floyd rocker Roger Waters to alter the famous Floyd anthem to reflect the situation in Iran.
The song replaces the teacher reference with "Hey, Ayatollah, leave those kids alone!" It's performed by a Toronto-based rock band fronted by two Iranian brothers called Blurred Vision. It's been seen by more than 160,000 viewers on YouTube.
Pink Floyd founder Roger Waters gave Blurred Vision permission to use the song. Proceeds will go to Amnesty International.
The Blurred Vision version of the song expresses discord between young people and the government of Iran, where it's illegal to play rock music.