London, UK. 14 October 2017. A sign promotes an anti-slavery message as people prepare to take part in the "The Walk For Freedom", marching around the capital demonstrating against modern slavery. The protest is co-ordinated with other walks which abolitionist group A21 is staging in 400 cities around the world on the same day. The facemasks represents the silence of modern slaves. Credit: Stephen Chung / Alamy Live News

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Photo credit: © Stephen Chung / Alamy / Afripics
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Keywords: a21, anti-slavery, demonstration, facemask, freedom, london, march, mask, protest, servitude, silence, slavery, walk