Mass shootings in the US: there have been 1624 in 1870 days
theguardian.com
theguardian.com
Europe: 53 dead, 169 injured U.S.: 392 dead, 1,502 injured
See https://www.vice.com/en_us/article/4wb9p3/mass-shootings-in-... and https://www.vice.com/en_us/article/xdwpwk/mass-shootings-in-...
In the same period there has been something like 60,000 firearm homicides.
(so ~50x the deaths from homicides that don't fit into the mass shooting category)