Five to the head. Not taking many chances, were they?
Apparently they were operating under the belief that the man was directly connected to the botched bombings the day before. He was wearing a heavily padded coat (which the police thought might have been concealing something) on a hot day and attempted to flee from the police when challenged, so it is not unreasonable that they wouldn't take any chances.
[[Oh hogwash! Just like anywhere in the world... All he had to do to stay alive was obey the commands he was given. Leaping the turnstile and running from police is suicidal behavior]]
One more question? Was he in the country illegally? If so, he would be alive if would have stayed home in Brazil. It does not pay to break the law. If the police tell you to halt, your ass better halt or you suffer the consequences.