I heard a story – I’m not sure if it is absolutely true – but it goes like this:
There was once a hidden tzaddik who came to a town and started telling them that the current year, in elul, (he named a specific date), the germans will attack their city and that they should leave before they have a chance to. But they chased him and threw stones at him and called him a “navi sheker” and cursed him out. One carpenter had pity on him and he listened to him – and he ended up being saved, because on that exact date that the tzadik said, the germans attacked his city and everyone else was either killed or sent to a conecentration camp.
We can think that we are totally safe, but who knows? We must be aware, and if there are rumors something might happen, don’t go crazy about it, but keep it in mind.
I agree with most people on here, even if they themselves are arguing, because, I agree that we must trust in Hashem and that everything is gam zu letova and hashgachah pratis.
But at the same time, we must be wary and careful of any red flag. We have hishtadlus, we can’t totally rely on Hashem for everything, because Hashem doesn’t want us to be too lazy, (among other reasons).