I understand why evil people would target a whistleblower, but killing them seems more logical rather than watching them suffer.

My question is how are other Targeted Individuals chosen? It was hinted in the thread last night that they are singled out for being born with certain telepathic powers and or bloodlines. Well then who is doing the targeting? What exactly are they trying to accomplish? And how do they know who has what bloodlines or telepathic powers to begin with?