It was 29 years ago today that a lone gunman assassinated John Lennon and the anniversary was the spur behind  a youth “bed in” at the COP15 conference center.

Socres of young folks from around the world used the day to remember Lennon’s famous bed-in protest of the Vietnam War and to put their own spin on it. They pulled on their P.J.s, pulled out their pillows and protest signs and got in “bed” together to perform a rendition of Lennon’s iconic Give Peace a Chance, remaking the lyrics to reflect their climate concerns.