Police arrested the symbolic leader of a six-month protest movement that took over the southern city of Oaxaca and left at least nine dead, hours after he said at a news conference in Mexico City that he’d gone to the capital to negotiate a peaceful solution. Flavio Sosa — whose heavy-set, bearded presence became an emblem of the leftist Oaxaca People’s Assembly — was arrested late Monday on charges related to the barricades, vandalism and irregular detentions carried out by some protesters. Full Story