The topic, in general, might be summarized as "Why is it that the FBI seems to have known about most of these mass-shooter cretins in advance of their moment of infamy?" Because--spoiler alert--they have.
Thursday, May 27, 2021
Documenting, here as a post, what was originally intended as a comment to an entry by Wirecutter. Another contemporaneous post at The Federalist is also appropriate backdrop.