He got the figure from this Vox article. While left online mag puts the number somewhere closer to 33. So who do we believe? Really, it would depend on how you define “mass shooting” but even still 1,500+… come on.
Using the actual FBI definition of mass shootings, there seems to have only been four mass shootings for the entire year of 2015, yet leftists were claiming 355.
And in terms of actual deadliest since Sandy here, here’s what this site came up with:
A month earlier on October 1st, gunman Stephen Paddock opened fire at a music festival from his hotel room in the Mandalay Bay Casino in Las Vegas.This is ranked as the deadliest shooting of all time, with 58 people killed and about 500 injured.