Wikipedia
Bed-In
As the Vietnam War raged in 1969, Yoko Ono and her husband John Lennon held two week-long Bed-Ins for Peace, one at the Hilton Hotel in Amsterdam and one at Fairmont The Queen Elizabeth in Montreal, each of which were intended to be non-violent protests against wars, and experimental tests of new ways to promote peace. The idea is derived from a " sit-in", in which a group of protesters remains seated in front of an establishment until they are evicted, arrested, or their demands are met.
The public proceedings were filmed, and later turned into a documentary movie. The film Bed Peace was made available for free on YouTube in August 2011 by Yoko Ono, as part of her website "Imagine Peace".