Keystone means different things, not just one. The arch of absolute power that control this world have a keystone that keeps their system from being exposed. That keystone is their use of absolute evil as a deflection. No normal person wants to see or even know the specifics of any brutally violent act, and especially when it involves children and infants. We avert our eyes at such things. Hold our hands to our ears. Vomit and wretch. Pass out from shock. That is their keystone! People finding out about it and exposing them (dark to light) is their fear. We are that light! It has to be done, or this will never go away. Got your vomit bags?