When 200,000 anti-globalisation protesters converged on the Italian city hosting the G8 summit in 2001, all but a handful came to demonstrate peacefully. Instead, many were beaten to a pulp by seemingly out-of-control riot police. But was there something more sinister at play? And will the victims ever see proper justice? Nick Davies reports…..

Riot police surround an injured anti-globalisation protester lying on a pavement in central Genoa. Photograph: Sergei Karpukhin/Reuters