This is there as a precaution against an increasingly violent world...You have nothing to worry about if you don't plan to do anything that is against the local laws.
That presupposes that humans and the world are 'more violent' now than they were before. The world has always had criminals of all-sorts, in fact some of the most violent people in human history are hundreds and thousands of years behind us. The world is getting more complex, sure, but human beings are at their finest when they grapple complex issues without resorting to the easiest instinctual level (fear). I think we can have modern society just fine without training everyone to be afraid of each other.