CLEVELAND, Ohio -- The horror in Grand Blanc, Michigan, last week was almost unbearable: a man drove his truck through a church, opened fire on worshippers, and set the building ablaze.

Four people were killed; eight were injured. A sacred place was left in ruins.

Michigan has a red flag law — the kind of measure that, if used in time, might have offered a chance to stop someone so clearly spiraling toward violence. It’s a tool that lets family members, police or medical professionals ask a judge to temporarily remove guns from someone showing clear warning signs of danger, such as recent threats, violent behavior or substance abuse.

It didn’t prevent this nightmare. That fact matters, because no law is a magic shield against violence. A person determined to cause harm may still find

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