Cyanide was used in the infamous Jonestown Massacre

true or false

Answer: true

Justification

You can find in the news (research by internet) that Jonestown Massacre, happened in the agricultural commune named Jonestown, Guyana, in November 197.

It was a mass murder-suicide of members of the Temple cult leaded by the paranoid Jim Jones who had setled the commune.

I will not enter into details, but regarding cyanide, as a part of the mass suicide plan devised by Jones, members of the commune poisoned a fruit drink with cyanide, tranquilizers and sedatives, which was given to babies and children, and then ingested by adults.