The Peruvian National Police and immigration authorities detained InvestigativeMedia owner and filmmaker John Dougherty on April 21 after he finished screening his documentary film “Flin Flon Flim Flam” in Cusco, Peru…The documentary reports on Toronto-based Hudbay Minerals’ worldwide mining operations…More than a dozen plain-clothes officers surrounded Mr. Dougherty and Jen Moore, Latin American program coordinator for MiningWatch, Canada, on the street outside the Cusco Cultural Center and forced them into a vehicle without a warrant. They were taken to the immigration office in Cusco. In a statement released early Monday, Mining Watch, Canada detailed Mr. Dougherty and Ms. Moore’s unlawful apprehension.