One of those songs – like ‘We Shall Overcome’ – that gives protesters a chant as well as a message. No other protest song has attracted the same level of attention. It was recorded in a Canadian hotel bedroom, with various late-’60s luminaries, and starring pop’s most famous couple, John Lennon and Yoko Ono. Few remember the lists that constitute its verses, but almost everyone knows the chorus. Its power perhaps lies in its simplicity