The man who shot and killed eight people at a FedEx facility in Indianapolis never appeared for a hearing under Indiana's “red flag” law, even after his mother called police last year to say her son might commit “suicide by cop." Authorities did not seek such a hearing because they did not have enough time under the law's restrictions to definitively demonstrate Brandon Scott Hole’s propensity for suicidal thoughts.

Thirteen-year-old Adam Toledo dropped the gun he'd been holding, turned and began raising his hands just as the officer had commanded. Then the cop fired a single shot, killing the boy in the dark Chicago alley.

Revelations that Nashville police were warned that Anthony Warner was building bombs in an RV at his home more than a year before detonating one in downtown Nashville on Christmas morning have the police chief on the defensive, saying that his officers handled the situation properly — even though they never made contact with Warner himself.