This is not to say that fear and its mindless responses are always a bad thing. If the threat is such that simply running away as fast as possible is the optimal response, fear is your friend. It’ll make you run hard and long. Sometimes fear will prompt the “fight” reflex, instead, and this can also be the best response.
But whichever is chosen, “fight or flight” are generally the best responses only to overt and immediate physical threats. Pretty much every other kind of threat calls for thoughtful analysis of the real source and true nature of the danger, and thoughtful formulation of the optimal response.
In other words, for everything other than an immediate physical threat, the mindlessness induced by fear is the worst thing that can happen — for individuals.
ON THE OTHER HAND, GOVERNMEN ...