The 10-year life span of that ban on so-called assault rifles gave researchers the opportunity to compare what happened with mass shooting deaths before, during and after the prohibition was in place.
www.oregonlive.com
The 10-year life span of that ban on so-called assault rifles gave researchers the opportunity to compare what happened with mass shooting deaths before, during and after the prohibition was in place.
www.oregonlive.com
During the 1994-2004 ban:
In the years after the assault weapons ban went into effect, the number of deaths from mass shootings fell, and the increase in the annual number of incidents slowed down. Even including 1999′s
Columbine High School massacre – the deadliest mass shooting during the period of the ban – the 1994-2004 period saw lower average annual rates of both mass shootings and deaths resulting from such incidents than before the ban’s inception.
From 2004 onward:
The data shows an almost immediate – and steep – rise in mass shooting deaths in the years after the assault weapons ban expired in 2004.
Breaking the data into absolute numbers, from 2004 to 2017 – the last year of our analysis – the average number of yearly deaths attributed to mass shootings was 25, compared with 5.3 during the 10-year tenure of the ban and 7.2 in the years leading up to the prohibition on assault weapons.
We calculated that the risk of a person in the U.S. dying in a mass shooting was 70% lower during the period in which the assault weapons ban was active. The proportion of overall gun homicides resulting from mass shootings was also down, with nine fewer mass-shooting-related fatalities per 10,000 shooting deaths.
Taking population trends into account, a model we created based on this data suggests that had the federal assault weapons ban been in place throughout the whole period of our study – that is, from 1981 through 2017 – it may have prevented 314 of the 448 mass shooting deaths that occurred during the years in which there was no ban.
And this almost certainly underestimates the total number of lives that could be saved. For our study, we chose only to include mass shooting incidents that were reported and agreed upon by all three of our selected data sources: the
Los Angeles Times,
Stanford University and
Mother Jones magazine.
Furthermore, for uniformity, we also chose to use the strict federal definition of an assault weapon – which may not include the entire spectrum of what many people may now consider to be assault weapons.
Cause or correlation?
It is also important to note that our analysis cannot definitively say that the assault weapons ban of 1994 caused a decrease in mass shootings, nor that its expiration in 2004 resulted in the growth of deadly incidents in the years since.
Many additional factors may contribute to the shifting frequency of these shootings, such as changes in domestic violence rates, political extremism, psychiatric illness, firearm availability and a surge in sales, and the recent rise in hate groups.
Nonetheless, according to our study, Biden’s
claim that the rate of mass shootings during the period of the assault weapons ban “went down” only for it to rise again after the law was allowed to expire in 2004 holds true.
As the U.S. looks toward a solution to the country’s epidemic of mass shootings, it is difficult to say conclusively that reinstating the assault weapons ban would have a profound impact, especially given the growth in sales in the 18 years in which Americans have been allowed to purchase and stockpile such weapons. But given that many of the high-profile mass shooters in recent years purchased their weapons
less than one year before committing their acts, the evidence suggests that it might.