SOCIAL “SCIENCE” UPDATE: Obama’s Gun-Control Misfire: Before the 2014 election, the FBI claimed that mass shootings were up. False.

Last September the Obama administration produced an FBI report that said mass shooting attacks and deaths were up sharply—by an average annual rate of about 16% between 2000 and 2013. Moreover, the problem was worsening. “The findings establish an increasing frequency of incidents,” said the authors. “During the first 7 years included in the study, an average of 6.4 incidents occurred annually. In the last 7 years of the study, that average increased to 16.4 incidents annually.”

The White House could not possibly have been more pleased with the media reaction to these findings, which were prominently featured by the New York Times, USA Today, CNN, the Washington Post and other major outlets. The FBI report landed six weeks before the midterm elections, and the administration was hoping that the gun-control issue would help drive Democratic turnout.

But late last week, J. Pete Blair and M. Hunter Martaindale, two academics at Texas State University who co-authored the FBI report, acknowledged that “our data is imperfect.” They said that the news media “got it wrong” last year when they “mistakenly reported mass shootings were on the rise.”

Mind you, the authors did not issue this mea culpa in the major news outlets that supposedly misreported the original findings. Instead, the authors published it in ACJS Today, an academic journal published by the Academy of Criminal Justice Sciences. “Because official data did not contain the information we needed, we had to develop our own,” wrote Messrs. Blair and Martaindale. “This required choices between various options with various strengths and weaknesses.” You don’t say.

It’s like this stuff is driven by politics, not by the data. Related: Bloomberg’s School of Public Health Cherry Picked Claim that firearm homicides in Connecticut fell 40% because of a gun licensing law.

Plus: Preelection FBI ‘Active Shooter’ Study Team Admits Media Misinterpreted It — Six Months Later.