Could be the economy is getting bad, the time of the year, divorces and other problems like that and of course the #1 reason for a lot of these killings......(drum roll please)...The victims and perps are involved in the illegal drug industry!
One official police statement I read about the Fort Wayne shootings stated that the victims died as a result of "lifestyle choices."
Politically smooth way to state it: whether gangs, drugs, other illegal activities, or just associating with trouble and troubled people, it says these people were not random victims.