First the cop screamed abuse at Mir Hossein Mousavi’s supporter, a white-shirted youth with a straggling beard and unkempt hair. Then he smashed his baton into the young man’s face. Then he kicked him viciously in the testicles. It was the same all the way down to Vali Asr Square. Riot police in black rubber body armour and black helmets and black riot sticks, most on foot but followed by a flying column of security men, all on brand new, bright red Honda motorcycles, tearing into the shrieking youths – hundreds of them, running for their lives. They did not accept the results of Iran’s presidential elections. They did not believe that Mahmoud Ahmadinejad had won 62.6 per cent of the votes. And they paid the price.