Yoko Ono, widow of the late John Lennon,  invites people from all over the world to join her in spirit when she lights the Imagine Peace Tower on the island of Viðey, near Reykjavik, Iceland, Tuesday, Oct. 9 2012, in honour of all the activists of the world: past, present and future.  The  Imagine Peace Tower  is a beacon of world peace and is the work of the legendary artist, musician and peace advocate Yoko Ono who dedicated it to the memory of her late husband John Lennon. Photo: AP
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