London, UK. 1 May 2017. A demonstrator holds a placard during the annual May Day Rally on International Workers' Day, marching from Clerkenwell to a rally in Trafalgar Square. Credit: Stephen Chung / Alamy Live News

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Photo credit: © Stephen Chung / Alamy / Afripics
License: Licensed
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Keywords: clerkenwell, day, demonstration, international, labour, london, protest, rally, square, trafalgar, union, workers