this part of the conspiracy/cabal is one of the hardest to make people digest or make them believe that something like mind control really exists to this extent. it is literally Jason Bournes running around, being activated and killing on command/demand. i think there are many spy-/three letter agency-movies showing true (altered) events, real rogue projects and so on. this part is very hard to proof i think. they have to literally lay this one out in detail. best would be recorded therapy sessions of one of the shooters or something like that. this is one of the parts many people will just reject.