You are making an assumption that I am not ready to make. There are too many different versions of how the shooting took place. There are several contradictory versions in this article posted to FreeRepublic. Some of those "many people about" have a different account from the police.
My criticism isn't directed to the police who shot this guy, but rather it is to a government policy that allows extremist Muslims into the country. And then tries to deal with these consequences by shooting a guy when he runs to a subway train.