Sonnentempler
The instances closest to "ritual killing" in the criminal history of modern society would be pathological serial killers such as the Zodiac Killer, and mass suicides with a doomsday cult background, such as the Peoples Temple, the Movement for the Restoration of the Ten Commandments of God, the Order of the Solar Temple or the Heaven's Gate incidents. Other examples include the "Matamoros killings" attributed to American cult leader Adolfo Constanzo and the "Superior Universal Alignment" killings in 1990s Brazil.