I always prefered the real version of Goldilocks - where the bears eat her for breaking and entering, slander, theft of porridge, criminal damage and defammation of character. Makes certain British farmers look postively humane.
The world has always been violent - red in tooth and claw - the difference is, humans are the only creatures to have developed tools to be violent with. Even the smallest creature in the field will learn by example. If we teach our children that violence is acceptable, then they will teach theirs. If we teach them that it is a part of living, but that we have a choice, then hopefully they will learn that that choice is theirs and choose accordingly.