one more way of parsing this data:

—7 of the 40 deadliest mass shootings since 1949 occurred in 10 years before 1994 assault weapons ban

—2 occurred in 10 years the ban was in effect

—13 occurred in the first 10 years after ban expired

—13 occurred in the last 5 years

— John Harwood (@JohnJHarwood) August 8, 2019