I think I found something interesting from the same DOJ search function pointed to earlier today.
Searching for "Darkness" related posts in old Q posts, I found number 328. With darkness spelled a variety of different ways:
>Light will overcome d_a_rkness.
>Light will expose darkne_s_s.
I searched both "rkness" and "darkne" in the same DOJ search and this one result came up: (pic related)
https://www.justice.gov/sites/default/files/ag/legacy/2011/08/23/06-22-1966.pdf
As you can see, in the OCR it's spelled "darknes$" - perhaps a clue for anons?
It contained some interdasting references to Darkness and Light and mentions a "knowledge revolution" although it is generally a series of questions about the relationship between technology and law enforcement, suggesting that law enforcement should work with science. (Think technocracy, future spy grid.)
I looked up the author. He was AG under LBJ and was instrumental in setting up the warren commission and thought it important that people believed the Oswald lie. (pic related)