Crime rates are dropping almost everywhere; the exceptions are short term increases during episodes of societal disruption (e.g. wars).
One of the reasons Japan's rate is so low is that they're ahead of other countries in the race to grow old; the vast majority of crime, and especially violent crime, is committed by young people.
One of the reasons Japan's rate is so low is that they're ahead of other countries in the race to grow old; the vast majority of crime, and especially violent crime, is committed by young people.