The US government poisoned alcohol during Prohibition (2010)
Although this had unfortunate consequences, and would be unthinkable in today's enlightened world, I'm not sure the line of reasoning here was unreasonable.The idea that manufacturers would be allowed to produce vast quantities of a partially illegal substance, without putting in efforts to prevent illegal use, seems unreasonable.Imagine the outcry if it turned out Phizer was manufacturing all the heroin. (They and their friends are manufacturing the heroin addicts, but the doctors are equally to blame here) It seems reasonable the government would act to stop it. The understanding of human behavior was not developed enough in the 1920s to really expect a perfectly safe program.You could argue that the government should have been serving, rather than fighting the people, but a democracy, even a republican one like the US's is subject to the whims of an easily frightened electorate.