I have wasted around 1.5 hours of my life watching videos of the "proof". All that I can say is that somebody should just stake out the joint on a full moon to see the hundreds of DC politicians show up.
Yes, there are some strange things. However, Soros cutting a cheque (called a "donation" in some videos) for renting the facility? So he had a party there. I'm sure they do make you pay to rent the place out for a fundraiser (same reason that Hillary might make a "donation.")
The "tunnels" shown in some videos where the place is under construction? I have done commercial rennovations and that is EXACTLY how the floor looks when you have to put in a drain for a dishwasher or a new toilet or a floor drain to remove the blood when you drain dozens of victims in a single night?
Well, you get the picture. The concrete is cut 2 feet wide and I am supposed to believe this is for "tunnels?" 
The dude making the coffins? I'm going to say they were props. First, you don't make coffins out of mild steel. Secondly, why the hell are you burying the kids in coffins? To make them easier to find? (How much is left of the kid after you BBQ them for the Democratic guests, anyhow?)
The commercial walk in cooler is now a kill room? Why bother even spending the $$$ to put in the evaporators if you are not using it as a cooler? I loved the one video where the narrator points out that the owner is in a rubber shirt and is probably into something weird (I will give him that. But BDSM, gay kinky sex and strange fetishes do not equate to pedophilia cannibalism.) And the guy has screwed up taste in art- but he is not alone in that (particularly among the group who might wear rubber shirts and leather pants.)
And on it goes. There are some strange (even disturbing things), but how damn hard can it be to watch the place for the hundreds of children that are being trafficked out of the joint and the dozens of high satanic priests arriving every full moon and solstice?
The list goes on and on and on. If you are going to make these claims, you need to base it on more than emails and speculation. This is a case where if they have actual proof, present it rather than 100 points of pure speculation and hope that because the public cannot explain 2 of them that we buy the whole damn story.
Get back to me when somebody has more than an email talking about leaving a handkerchief with pizza joint locations on it.
As to Brightbart- I have already had this conversation with somebody here. Wrong conspiracy. He was scheduled to be exposing Obama a few hours after he died.
How dare you! The first (and probably second, eighth, twenty forth and fifty ninth) rule of conspiracy theories is collate a list of things that could go towards showing a narrative you've already decided is true, is true. Ignore and don't discuss things such as facts, or with anyone who has professional knowledge and/ or experience but contradicts the narratve (bonus ct points if invective and sarcasm is employed).
Never ever do anything on a practical level (such as actually turn up to police with evidence that would stand up in court); Never ever collate real evidence that doesn't involve simply posting youtube videos or links to what other ct websites have dreamed up that morning.
Rinse and repeat until such time as interest is lost or it dawns on them that it really is made up, then quietly forget about it. And if in the future its brought up again, refer to the new shiny thing that has 'them' underpinning the terrible things in the conspiracy.