Why only define ‘a single spree killed at 4 people’ with only ‘shootings’?
Is there any other form of killings that fits the bill but not with guns? Yes, yes, there is. So females don't do arsons, vehicular homicides or other types, either?
how about nurses killing all those old people?
Poisoning?
The mother who killed her own children?
The real issue here is guns guns guns. Not who was doing the killing.
the author is focusing on the means, not the evil.