Evidence from the inquest into the killing of Jean Charles de Menezes by London police on 22 July suggests that the initial information that was given by the police was false: Mr Menezes did not jump a ticket barrier, did not flee from police, was not wearing a large and roomy coat or carrying a rucksack. Rather, he was killed after being followed from an apartment block that was under surveillance. So there is the possibility that he was killed for having a residence and personal appearance that the panicked police thought were sufficient. The Guardian has the report, and so does BBC.
Update: Now it turns out that the police commander, Ian Blair, intervened immediately to delay an independent investigation into the murder of Jean Charles de Menezes, who was under restraint at the time that he was shot repeatedly at close range. We expect Mr Blair to prepare the next several minutes of his life writing his letter of resignation, several years in jail, and the remainder in disgrace.