Popular conspiracy theories have made their way into books and movies. What most of them have in common is a rather sinister plot where people have been controlled or killed by governments or organizations. The wicked deeds are then covered up.
A theory that has been around for a long time attempts to offer an alternative explanation for the spread of the AIDS virus. The theory claims that it is a man made disease genetically engineered by scientists. The disease is said to have been first worked on by the Nazis but was not perfected until after the war. Instead of being used to kill Jews as was originally intended, attempts were made to rid the planet of Africans and gay American men. This is why it was first recorded among those groups.
Another popular theory is an alternative account of what transpired on 9.11.2001 when the twin towers in America were brought down by hijacked commercial airliners. Some people argue that this act was orchestrated from within the ranks of the CIA and nothing to do with Islamic terrorism. According to this school of thought, it was staged as a means to justify military activities in the Middle East.
Theories relating to biblical prophecies have been around for generations. People believe that groups such as the free masons are agents of evil whose job is to create the conditions that will bring about Armageddon. 666 is said to be the mark of the beast and all humanity is to be branded with it otherwise we cannot buy or sell. Theorists claim that all the numbers we use in modern identification technology is a precursor to this terrible mark.
A very disturbing theory that persists concerns the disappearance of native populations once resident in areas of the Americas and Australasia. It is said that poisonous blankets deliberately infected with deadly viruses were given out. Otherwise people were poisoned by immunization programs conducted by foreign agencies.
All the most popular conspiracy theories have been debunked in some way or the other. However they continue to hold a fascination. It could be because in each theory there is always a measure of plausibility.