An off-duty sheriff's deputy went on a shooting rampage at a home in northern Wisconsin early Sunday, killing three high school students and three recent graduates before authorities fatally shot him, officials said. Another victim was in critical condition.
No, it didn't happen at a school. But, it never the less seems to prove the inherent limitations of relying on law enforcement to prevent mass shootings. More law enforcement can prevent crime. But, mass shootings are among the least predictable of all serious crimes.