“Jonestown”  was the informal name for the Peoples Temple Agricultural Project formed by the Peoples Temple, an American religious organization under the leadership of Jim Jones, in northwestern Guyana.  It became internationally notorious when on November 18, 1978, a total of 918 people died in the remote commune, at the nearby airstrip in Port Kaituma, and in Georgetown, Guyana’s capital city.  A total of 909 Americans died in Jonestown, all but two from apparent cyanide poisoning, in an event termed “revolutionary suicide” by Jones and some members on an audio tape of the event and in prior discussions.  The poisonings in Jonestown followed the murder of five others by Temple members at Port Kaituma, including United States Congressman Leo Ryan, an act that Jones ordered.  (More from Wikipedia)