What I found interesting here is that to me, a libertarian who thinks access to all drugs at low, market-set prices is a human right, this contamination is one

What I found interesting here is that to me, a libertarian who thinks access to all drugs at low, market-set prices is a human right, this contamination is one more indictment of the War on Some Drugs. No different from the many problems of wood alcohol contamination and poisoning during US Prohibition. But the mainstream script will be: cocaine is even more dangerous than we had imagined; stronger measures are needed to keep the killer cocaine away from our children; users need to wake up to the inevitable disasters that await them if they continue to "abuse" cocaine, because any use of any prohibited drug is "abuse" never "use".