He didn't want to be a dead hero. I can't criticize this person. I wouldn't want his job.

Wall Street Journal: Officer at Florida School Waited Outside Instead of Confronting Shooter, Sheriff Says Deputy should have ‘addressed the killer, killed the killer,’ Sheriff Scott Israel says

The sheriff’s deputy who was assigned to the Florida school where a gunman killed 17 people last week has left the force after evidence showed he stood outside the building where the shooting occurred rather than going in, Sheriff Scott Israel said Thursday.

“He never went in,” Sheriff Israel said, describing video footage of the scene he had watched.

Asked what school resource officer Scott Peterson should have done, the sheriff said he should have gone into the building, “addressed the killer, killed the killer.”

Mr. Peterson resigned after Sheriff Israel suspended him without pay pending an internal investigation, the sheriff said, speaking at a news conference.
-----------------------------------------
A comment somebody wrote: "The cop had a handgun. He heard the rapid fire of an AR-15. He should have gone in but he likely would have been blown away. And yet these are the weapons many people want to keep in the hands of civilians."

It makes sense to not want to be blown away. An AR-15 would have cut him to pieces.

In the other comments lots of brave stupid assholes said he should have gone in there.

Will Idiot America fix the violence problem. I doubt it.