PCP Angle Dust, NMDA Receptor Agonist, Maddox Dr Who Invented "It", VICE Episode Exploring Analogs with Fewer Side Effects

From Wikipedia entry on NMDA receptor, these are a major part of the CNS important for learning, memory, neuroplasticity, and are the target of drugs including and similar to PCP or street drug angel dust, which incidentally does not cause violence, instead the effects depend on the user, so a violent person who takes it, or smokes sherm dipped cigarettes. 

PCP will remove the mental barriers that keeps user in line following laws, giving rise to media reports of criminals high on PCP with super human strength, but the overwhelming majority of people who consumer some form of PCP, are just having a psychoactive experience or their mind and body connection disconnected temporarily, giving rise to the term dissociative anesthetic. 

Our (Mind-Body) connection powerful, sometimes negative thoughts can become diseases

Our body naturally actives NMDA receptors with glycine an amino acid or the stimulating glutamate, made famous for the Asian salt Monosodium Glutamate, which makes meat, chicken or fish taste better.

If a NMDA receptor over activated, influx of Ca2+ ions can cause over activation excitotoxicity, implicated as a causal factor for Alzheimer's diseases, Parkson's diseases, and Huntinton's diseases. Agents that block the NMDA receptor are useful for treating these diseases.

MK-801, ketamine, amantadine, memantine are antagonist that bind to the NMDA receptor blocking its activation.

So a few questions arise

1 why did the US government intelligence agency bring PCP to inner urban areas

2 why did agents teach locals how to make PCM to dip cigarettes into to smoke SHERM

3 why did government work with media to air stories of violent people high on PCP

4 why did media demonize PCP as a violent drug, when it was criminals, not PCP

5 why have NMDA receptor drugs become so important in medicine as prescription drugs

6 why have street users of angel dust who are non violent been demonized in media