Jean Charles de Menezes
On this particular incident, I think we ought to remember the circumstances as to why he got shot.
Yes, it was a mistake, a bloody serious one. And it should have never happened. But please remember that on the previous day London had been attacked by a number of backpack bombs. Frankly, I was surprised there wasn't more shootings in the capital that week. There was nearly another one on the day de Menezies was killed in fact. The footage hasn't been shown again, but another foriegn visitor near the Houses of Parliament - who had little grasp of English - had got the attention of the firearms unit, and they challenged him. As was seen, he at first hadn't realised he was being challenged by police, but thankfully got the message when the unit aimed at him.