Perhaps one reason why there was so little
panic on December 7, 1941, was because "War
Of The Worlds" had been a sort of "shakedown"
cruise. Coming only about a month after the
Munich crisis, where extensive use was made of
news bulletins, the public was on edge in October
1938; some people felt that it was really the Germans
attacking the U.S. Once the public finally realized
that "War Of The Worlds" was a play and not real
news, and with the continued use of bulletins to relay
real breaking news events, Pearl Harbor elicited not so
much panic but rather a desire to whip the Japanese.
By the way, a few years later a radio station in South
America broadcast "War Of The Worlds" with the locale
changed to the station's broadcast area. The panic there
was such that a group of listeners actually burned down
the radio station.