I recall getting the "drugs are bad" slide show in grade school. Among the images were examples of how dirty and poisonous the illegal drugs were. They gave images of how clean the drugs were from hospitals and pharmacies, since they could not say all drugs were bad.
This gave rise to a few questions in my mind. Questions I kept to myself because, while I was curious, I was too timid to outright question what were were told. The first question that came to mind, why would drug dealers put the crap that was shown in the slides into the drugs they sell? I thought that if they were really putting this stuff into the drugs they people buying it would end up dead, and not give them money, or they'd go find drugs from a competing dealer that didn't give them stuff that made them sick. Even at a young age I understood some basic economics. Illegal drugs aren't free from the rules of supply and demand.
Then it came to the images of the clean drugs that came from the pharmacies. If the drug dealers were selling this dangerous stuff then why not get the drugs from the pharmacies. At that age I didn't understand all the legal barriers to get the drugs, or it was not yet explained to me. Of course that is what people are doing. These dealers will buy pills from people with prescriptions to sell it to people that don't, or they rob the pharmacies of the good stuff.
This was about the time that people were trading dirty needles to inject their drugs because the government decided that allowing pharmacies to sell clean needles without a prescription was somehow encouraging drug use. What happened is that people, like my sister with diabetes, had a hard time finding clean needles while the druggies were using dirty ones. Because of this blood born infections went up in both populations. Poor diabetics had to re-use needles because getting clean was got more expensive, and drug addicts were re-using needles because getting clean ones was now illegal.
Yes, my teachers lied to me. The drugs were not killing people, government policies were. The reason these drugs are dangerous is because they were made illegal. They were not made illegal because they were dangerous.
This continued stack of lies being given to children is just one of many reasons why I oppose government funded education. I could rant on public education for a long time but this is not the time and place.