Don’t expect this fact to enter the debate. Breaking down Mass Public Shooting data from 1998 though June 2019: Info on weapons used; gun-free zones; racial, age, and gender demographics.
With all the discussion about having another assault weapon ban, only 13% of mass public shootings are done with any type of rifle. Among the other findings, about 9 in 10 of the attacks are in gun-free zones
Because “Assault weapons” are only the first step.