Drummer Lee Rigby of the 2nd Battalion of the Royal Regiment of Fusiliers was attacked and killed on Wednesday, May 22, 2013, near his barracks in the Woolwich section of London. (AP Photo/Ministry of Defence)

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Drummer Lee Rigby of the 2nd Battalion of the Royal Regiment of Fusiliers was attacked and killed on Wednesday, May 22, 2013, near his barracks in the Woolwich section of London. (AP Photo/Ministry of Defence)