The Watch the Water documentary rings alarm bells regarding snakes and their venom used to poison populations.

However, snake venom has been used since ancient times in war and ceremonial rites.

Ancient snake venom practices have evolved into accepted medicinal practices of today and is used in secret bio-warfare. Even our common medical symbol, the caduceus, a staff with two snakes coiled around it, is the official insignia of the United States Medical Corps, Navy Pharmacy Division, and the Public Health Service.

The caduceus is also the magic wand carried by Hermes (the Romans knew him as Mercury), the messenger of the gods. Before the appearance of the caducei in classical Greece, the symbol seems to have existed among the Assyrians, Hittites, and Phoenicians.

The Phoenician caduceus is thought to have been based on a military weapon. Was that weapon snake venom?
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in the days of the ancients, the military industrial complex has worked hand-in-hand with the pharmaceutical industry. They have always had their secret rituals/secret labs creating biological warfare for nefarious use.

The Bible referred to this forbidden practice as pharmakeia, which means witchcraft and sorcery and from which we derive our words "pharmacy" and "pharmaceutical."
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Shakespeare's Macbeth scene of the witches brewing sums up the Christian view of this satanic occult pharmakeia practice from time immemorial.

All Double, double toil and trouble;
Fire burn, and cauldron bubble.
First Witch: Round about the cauldron go;
In the poison'd entrails throw.
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The ghastly ingredients in their cauldron for conjuring up dark forces are reptile poison, fen snake aka the venomous bog snake, and of course your classic baby sacrifice, "the finger of birth-strangled babe" delivered in a ditch by a drab i.e. slovenly woman.

Have witches and sorcerers just exchanged their black robes for white lab coats? There is nothing new under the sun. It's just the age old struggle of good against evil.