I was asking if you think that wolves (animal or human) can be stopped from preying on sheep by preventing the sheep (animal or human) from seeing them?
I was saying that it would be better to teach the sheep (perhaps just the human ones, animal sheep are not all that good at learning new things) to look carefully at what they are being told, and to judge whether it is good or bad by comparing it to their own experience and to what they know, rather than keeping any sight of the wolves from them. and hoping that they will not noice them and pay attention to their propaganda.
To counter the bad propaganda, good propaganda is needed, to encourage the attitudes and actions that will form a barrier against ones that cause intolerance and wars and terrorism.
I am afraid I cannot explain what I mean any more simply than that. If you still don't understand, I must leave you with your pre-conceptions.