The researchers identified 662 cases involving threats to multiple victims, but they concede that it's likely "there are many more threats than completed events."
If an order had been issued, it would have expired months before the attack unless police successfully sought an extension.
Too much government authority lends itself to swatting-style abuse.
Senior Editor Jacob Sullum examines how the claim that Japanese gun restrictions account for the country's low violent crime rate isn't as simple as it sounds.
The answers underline the limitations of laws that aim to prevent this sort of crime by restricting access to firearms.
The legislation prohibits firearm sales based on juvenile records and subsidizes state laws that suspend gun rights without due process.
If Congress decides to encourage them, it should not overlook the importance of due process protections.
Because there is no reliable way to identify future mass shooters, it is inevitable that many innocent people will lose their Second Amendment rights.
These three gun controls failed in New York, and there is little reason to think they would work elsewhere.
Predicting violence is a lot harder than people claim in retrospect, and a wider net inevitably ensnares more innocent people.
The Justice Department's proposal encourages states to take away people's Second Amendment rights based on little more than bare allegations.
Rules range from absurd to appalling without respect for civil liberties or basic logic.
Even when states authorize gun confiscation orders, identifying would-be mass shooters is a daunting challenge.
Although police seized the perpetrator's shotgun when he was deemed suicidal, he was never identified as a potential murderer.
The president's unilateral restrictions are legally dubious and unlikely to "save lives."
A bizarre Florida “red flag” case shows the importance of safeguards that protect people’s Second Amendment rights.
The bill's requirements for "emergency" orders are loose, and it does not give respondents a right to a court-appointed lawyer.
Such a high approval rate reflects the threat these laws pose to due process and the Second Amendment.
When it comes to deciding who should keep their Second Amendment rights, the deck is stacked against gun owners.
Only if you assume they would have happened in the absence of gun confiscation orders.
The FBI is looking for companies to comb through social media posts and pinpoint possible threats ahead of time. Think of it like a meme-illiterate Facebook-stalking precog from Minority Report.
"The Second Amendment is not a suicide pact," the senator says, while glossing over the due process issues raised by gun confiscation orders.
Do we want Trump in charge of deciding who’s too crazy to own a gun?
If "the notion that we can identify mass killers before they act" is a "fiction," the conventional policy responses to mass shootings are unlikely to be effective.
The Trump-endorsed response to mass shootings gives due process short shrift.
The process for obtaining "extreme risk protection orders" that take away people's Second Amendment rights is rigged against gun owners from the outset.
Critics say the "red flag" law is violating Floridians' constitutional rights.