Criminologists consider the murder rate as a benchmark to forecast the overall crime rate.
Modern Medicine has kept the murder rate low, you can be shot pretty well but make it to a hospital within the golden hour, and they will likely save your life. I have to agree with LT Col (ret)Dave Grossman that the true measure of crime should be the aggravated assault rate. Read his book On Combat.
But it is good to hear fewer people are dying