Here's what PolitiFact discovered:
- From the Revolutionary War through December 2014, 1.2 million Americans have died in military conflicts, according to the Congressional Research Service.
- A 2012 report by a Binghamton University historian estimated a 20 percent higher death toll from the Civil War, which would push total deaths in military conflicts to 1.4 million.
- By contrast, domestic gun deaths from 1968 to 2014 add up to nearly 1.5 million.
- Some 63 percent of those gun deaths were suicides, and 33 percent were homicides.
- PolitiFact could not find data for gun deaths before 1968. Add in the missing years, and the total number of firearm fatalities since JFK's death would surely be higher than 1.5 million.