Reuters photographer Dylan Martinez heard the words ring out during chaotic scenes in London on Saturday, when mostly peaceful anti-racist demonstrations turned into violent scuffles after far-right counter-protesters arrived on the scene. Then he saw the man who had uttered them - a black protester emerging from the melee carrying an injured white man in a 'fireman's lift' over his shoulder. The picture he took has gone viral on social media and featured in news bulletins, capturing a moment of high drama that jars with the broader narrative - of anti-racist and far-right protesters fighting each other. "I saw a skirmish and someone falling to the ground," Martinez recalled of the moment near Waterloo Bridge, in central London, as he covered Black Lives Matter anti-racism protests that have flared up in the city. Martinez recalled that, after hearing someone say "That's not what we do!", he suddenly saw a white man being carried on a black person's shoulders through the crowd. REUTERS/Dylan Martinez TPX IMAGES OF THE DAY SEARCH "INJURED COUNTER-PROTESTER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. Matching Text: MINNEAPOLIS-POLICE/PROTESTS-BRITAIN-IMAGE TEMPLATE OUT