Not sure what to make of this situation, but not sure it's that simple either.
Let's say, for example in the US where many people own guns. Well, if you break into someone's home, there's a chance you will get shot.
In this case, were they just trying to restrain someone who was trying to steal their property until the police arrived? But if someone keeps fighting back and refuses to allow themselves to be restrained, then this type of thing can occur.