@Baldimo,
Generally, I think that we have a totally different aproach to the use of weapons.
Just today these statistics were published: in 2012, police in all German states (police is state's affair) shot 36 times at humans, killing 8 persons, wounding 20. 35 times it was self-defence, one time it was for hindering the escapee of a gangster (who was wounded).
Sources: FBI, House of Commons (Knife crime statistics)