A demonstration organised by anti-cuts group UK Uncut has formed a human road block on The Strand outside the Royal Courts of Justice. The protest is to oppose government cuts to Legal Aid funding.
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The man is believed to have suffered a fractured cheekbone.
The man, who was in his 30s, has not been identified, while several other people are believed to have suffered serious injuries.
If you're dreading going to work Monday morning, how about this for a career change.