I agree - instead of reading Blond or whomever read eye witness accounts, as many as possible and one will find out shocking news, like donning cartridges into the pockets of a Spanish priest - only to have a reason to present him to an officer - claiming he is a bandit in order to shoot him, all this started at least in 1808.
Neither the Spanish or the Portuguese lived in a system of terror before the French invasion. They resented to invasion, occupation and plundering - and defended themselves by all means.