For information about the rh negative blood factor, see also: RhesusNegative.net
Discusses satanic cults and details signs and evidence that may be found at crime scenes. Teaches officials what to look for and how to anticipate satanic activity.
Apparently law enforcement is being trained on how to spot those, so they can properly investigate if the ring committed further acts of rituals.
It doesn’t matter what you believe, but apparently they believe in their rituals. And they seem to happen quite a bit: