Quentin Deranque, 23, died in hospital last week after being beaten during a clash between far-right and far-left groups. Some 3,000 people joined a march in France on Saturday after the killing of a far-right activist in an incident that shocked the nation. Quentin Deranque, 23, died in hospital from brain injuries last week after being beaten in Lyon, where clashes be... [2221 chars]