While reviewing the video series made from the research work of Dave McGowan I noticed several parts that are very relevant to pizzagate: at 0:26 of this video they mention a series of murders that was committed in Italy from 1968-1985 that was wrongly attributed to a single farm labourer. In fact, they discovered that the killings were for body parts to be used in satanic rituals.

Article sited at 0:26 of video states

Pacciani, stock and tough, was convicted of the crimes in 1994 and died four years later. Italy consigned the case to history. Except that last week evidence surfaced suggesting Pacciani was not the Monster. He was merely the deliver-man to a Satanic sect, which commissioned the murdres to obtain human body parts for ceremonies said investigators.

Check out this series as many of these serial killers seem to mention snuff films as a source of fast cash

If we take this into consideration, that's a lot of body parts, so that must be a lot of money being paid out for human body parts. In addition, the case said that the secret service was involved. Sounds like the same operations going on with the CIA in the US and probably UK MI5/MI6. It is a known fact that the "intelligence" services were started in UK with John Dee in the 1500s and that was related to witchcraft/satanism as well. Our old buddy Crowley was involved in MI5 as an operative as well, making this idea of intelligence service/military service involvement in satanism a real topic to have a look into.

on this vid at 4:41 Otis Toole Says

It was the "Hand of Death" [cult]. We were working for that cult and we'd grab little kids for the human sacrifices, grab young women for the snuff films…

He also states:

We got most of those people from Texas since it's near the border with Mexico

John Dee was a Cabalist. Cabalists speak to spirits, also called intelligences. Therefore the word "Intelligence Agency" is a double entendre. There is evidence that many of the worlds oddest technological gains were due to the information scryed/devined from these spirits and these spirits asked for increasingly unpleasant payment when consulted: In the form of human sacrifices. Both Dee and Crowley admit this.