I don’t think this falls into that category, but the first example that comes to mind was the 1938 “war of the worlds” radio broadcast[0]. The dramatization wa

I don’t think this falls into that category, but the first example that comes to mind was the 1938 “war of the worlds” radio broadcast[0]. The dramatization was written as a news report and didn’t identify itself as fictional until well into the broadcast. Angry callers reported mobs taking to the streets, but the scale of the reaction has been debated. 0: https://en.m.wikipedia.org/wiki/The_War_of_the_Worlds_(radio_drama) https://en.m.wikipedia.org/wiki/The_War_of_the_Worlds_(radio...