Mini Manual of the Urban Guerrilla by Carlos Marighella-1969

The urban guerrilla, differs radically from the criminal. The criminal benefits personally from his actions, and attacks indiscrimminately without distinguishing between the exploiters and the exploited, which is why there are so many ordinary people among his victims. The urban guerrilla follows a political goal, and only attacks the government, the big businesses and the foreign imperialists. Another element just as harmful to the guerrillas as the criminal, and also operating in the urban area, is the counterrevolutionary, who creates confusion, robs banks, throws bombs, kidnaps, assassinates, and commits the worst crimes imaginable against urban guerrillas, revolutionary priests, students, and citizens who oppose tyranny and seek liberty.