All those street gangs with chemists on staff to compound exotic sedatives that aren't hardly known outside of veterinary or speciality medicine.
Or no, that's far-fetched...maybe it's those inner city street gangs, diverting shipments of powerful sedatives from reaching veterinary offices! I wondered what all those news stories were about, the ones where Veterinarians are saying their sedatives never arrived and it's impacting their ability to treat animals.
Same with the fentanyl, really, it's the local street gangs compounding it and cutting the upstanding Mexican cartels heroin. Inner city street gangs, in addition to having chemists on staff, are also super knowledgeable about obtaining precursor chemicals with unpronouncable names (to then create sedatives, to cut the pure, Mexican provided heroin).
@IronSkillet Personally I believe, similar to you, that it's mainly China supplying precursors at a minimum, and possibly equipment and manpower to the large Mexican cartels to produce fentanyl, fentanyl analouges and now these sedatives. China gets to wage shadow war on the The West, further degrade the moral fabric, and bankrupt our Healthcare systems, while the cartels get to make tons of money and get easy access to all the exotic shit needed to manufacture (and distribute?) their wares.