This was seen elsewhere. It seemed worth reposting for the sake of interest and additional info about the role of China in supplying the precursors:
The last time China was a global superpower, it was destroyed by drugs (Opium Wars). China hasn't forgotten this.
The First Opium War History Matters Short Animated Documentary
The Second Opium War History Matters Short Animated Documentary
Why did the British Attack the Chinese: The First Opium War
This video tells more about China and how the precursors to these street drugs make their way into the US, via Mexico and how Mexican drug cartels then manufacture and then smuggle these substances into the US to be distributed onto the streets. It mentions the use of unrestricted warfare. Karma?