Lawyer from Pontificia Universidad Javeriana. M.A. in Sociology from Berkley University. He has worked on land conflicts, guerrillas, paramilitaries, drug trafficking, peace processes, the state and territorial control, rural development policies, restitution of lands, among others. Author of Guerreros y Campesinos, El Despojo de la tierra en Colombia (Bogotá, Editorial Norma, 2009)