Remembering 9/11: The photos we should never forget

On the 13th anniversary of one of the greatest tragedies of the modern age, we look back to the most moving images captured on 11th September 2001 by both amateur and professional photographers. From the Catholic priest crushed whilst reading a firefighter his last rites to the ‘falling man’, these images should serve to remind us of the sacrifices made that day and the power of the human spirit.