Original: It is best known for the events of November 18, 1978 in Guyana, in which 918 people died at the Peoples Temple Agricultural Project (informally, and now commonly, called "Jonestown"), a nearby airstrip at Port Kaituma, and Georgetown.
Simplified: It is best known for the death of over 900 of its members on November 18, 1978 in Guyana, at the Peoples Temple Agricultural Project (informally called "Jonestown"), a nearby airstrip at Port Kaituma, and Georgetown.