How are you going to get it to subside, without dealing with the cause? If the fear is being manufactured, you aren't going to get out of the crisis until whoever is causing it relents and stops, or until you block it.

I mean, you could say "we're going to deal with this by teaching people not to be afraid of this stuff", but why not do interrupt the source as well?

Interrupting the source can work, I'm not saying that wouldn't help. I'd liken it to trauma care, sometimes you do need to just stop the bleeding first.

My point there was only that its risky. I see the risk on two fronts, in the moment its hard to recognize the root cause and there are some people who will take advantage of the fear to point "the mob", as it were, at the wrong cause for their own gain.