i am doing a research project on media scares or media rumors that have frigntened people throughout history and how society has reacted to them. I already have the y2k scare and the war of the worlds brodcast scare. I would like a couple other scares to report about. please help me find a couple other big media scares.

http://en.wikipedia.org/wiki/Unidentified_flying_object

http://en.wikipedia.org/wiki/Conspiracy_theory

http://en.wikipedia.org/wiki/Red_Scare