"""© Licensed to London News Pictures. 14/10/2107. London, UK. Girls 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. Photo credit : Stephen Chung/LNP"""
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