At least the birth of EC's horror line which was inspired by what was thought of, even in the Fifties, as old time radio horror shows like Inner Sanctum (which featured the creepy, pun-loving host, Raymond) and Light's Out (which had stories every bit as violent and disturbing as anything EC ever published as well as a progressive political viewpoint similar to that of Gaines). Sanctum has dated badly but most of Light's Out remains effective to this day (listen for yourself here).
We like to think of WWII as perhaps the one time in our country's history when we all pulled together. There is certainly some truth to that version, but it leaves out the scorn that was heaped upon those who didn't join in.