Of course the Fibbies knew about the Colorado shooter.

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.

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.