John Lennon was an advocate for peace through music and activism, influenced by his post-WWII upbringing and anti-war protests. He famously staged a "bed-in for peace" and protested nuclear weapons. Throughout his career, he wrote songs with powerful anti-war and pro-peace messages, such as "Imagine" and "Give Peace a Chance." Though a photograph of him holding a rifle may seem at odds with his reputation, people are complex and the image does not diminish his legacy as a powerful advocate for peace and social justice.