Can’t ever give anyone the idea you’re okay with lese majeste, I suppose. Though in some way it could be damned if they do, damned if they don’t. What if the convulsing prisoner harmed himself while they were waiting for him to come down from his drug trip. Would they then be liable to lawsuit for that?
It does seem to me that POSSIBLY a tranquilizer dart could prove of use in situations where a taser is not doing much. Sometimes there are risks. We see one engagement here, not a larger policy or if there was even an attempt at a larger policy.
Phencyclidine IS an anesthetic pharmaceutical drug! So is ketamine!
Our learned lil chemists have created all kinds of monstrous wonders for mankind. Note the number of pharma lawsuits and the length, speed, and lowered tone of the warnings.
Oddly the SAFEST drug you could give them to calm them down is CANNABIS! A couple of puffs of some stout Indica would plant them right on their butt. Plus it would improve their mood and make them more cooperative.