You always have to be careful as to how the statistics are arrived.
For example a man goes crazy, kills his wife, 20 year old son, 10 year old daughter and then himself.
In the US that would be listed as three murders and a suicide.
(three "violent crimes")
In Japan that would be listed as four suicides
(Zero "violent crimes")
Oh look, America has higher violent crime!
In the U.S. the Brady campaign (and other groups) consider persons up to the age of 21 to be children so if someone is killed at 20 the statistics say it is a child who died.
Many other countries have a much lower "age of majority" so the population group of what is considered childern is much smaller and a person killed at the age of 20 is an adult.
Oh look, America has more childern killed.
etc. etc.
