There are more mass shootings in states with weaker gun laws, according to a new study published in The BMJ, a medical journal, on Wednesday.
The study, from researchers at Columbia, New York University, Boston University, and the University of Pennsylvania, analyzed states’ mass shooting rates, the permissiveness of their firearm laws, and levels of gun ownership from 1998 to 2015. It then tested each of these to see if there was a link.
The result: Where there are more guns, there are more mass shootings. And where gun laws are weaker, there are more mass shootings.
“A 10 unit increase in the permissiveness of state gun laws was associated […]