LONDON (Reuters) - President Hassan Rouhani's trip to the coal mine in northern Iran was all going to plan, until the crowd massed in front of his car chanting "it's a day of mourning for workers".
Seconds later, shaky footage of Sunday's protest showed a man jumping onto the bonnet and stamping hard on the metalwork, a rare direct confrontation against the background of a highly-charged election race that keeps returning to one subject - Iran's stuttering economy.
