Looking at the percentages of murders

 Upon reading the book "The Will to Kill, making sense of senseless murder." Written by James Alan Fox, Jack Levin, and Kenna Quinet, in chapter two titled "The killers and their victims." I read that although most shows like "Supernatural" starring Jensen Ackels and Jared Padalecki, the rate of most murders in America are relatively low from about 2000 to 2015.

Looking further into the chapter it talks about how a different race can be a factor in most murders killings. Looking at the chart in the chapter is says that almost 50% of white race are victims with a  percentage of almost 44% as the offenders. Their also is a high rate of males as victims but they are also the higher rate for the offender. Why is males more likely to kill or be the victims? Could it be male jealousy? Why are women such a low precent of 22% of victims and only 9% of offenders? 

Also looking at the chart most killers ages are around 18-34. Why is this such a high percentage for offenders to be this age?

Look into this book for more information.

The Will To Kill - Google Books