Jean-Charles Menezes is another good example.
In Portugal, any policeman who injures or kills another person, whether it be a suspect, a fugitive or known criminal, whether it be with a gun, a car, etc. is systematically investigated and often tried in court. In one case, a bank robber who was leaving the bank holding a hostage with a gun to her head, was shot dead by a member of a SWAT team. The Ministério Público wanted to bring murder charges against the policeman but later dropped the charges.
You must keep in mind that Portugal had lived 48 years under a Fascist regime during which torture was a common practice against politicial opponents. Because of this, the laws are very lenient when it comes to protecting potential criminals and there so many safeguards that often guilty people go free. , Very often people confuse aggression with torture. If the police do beat up a suspect, they don't get away with it.
As for the Leonor Cipriano case, the investigation was badly done. First of all, the evidence of the photograph should never have been allowed, in accordance with Portugese law, because it was a digital photo which could have easily been photoshopped. Secondly, the person who first brought up the case, Marinho e Pinto, made himself an "assistente" in the case, so that he could not be questioned in court about the photo and the info he had obtained. Very strange.