Police look into Wisconsin bridge shooter’s mental history
The Washington Post - 05/19/2015
Mental illness and depression are common characteristics of mass killers, but there are other factors that lead to homicidal behavior, according to Jack Levin, a professor of sociology and criminology at Northeastern University in Boston.
“There are millions of Americans who are depressed, and they never kill anyone,” said Levin, a national expert on mass murders and serial killings. “It is true that most mass killers are chronically depressed, but depression by itself does not normally lead to violence.”