People should be free to think whatever they want, but the DEA does not just think drugs are wrong, they lock up and attack drug users. It is not thinking something that is wrong, it is the actions that those thoughts may lead you to do that can be wrong. Let them think that drugs are wrong, as soon as they do something to harm a drug user they should be punished. Many pedophiles think that having sex with young children is not wrong, and I do not think that they should be punished for their thoughts, however when they molest children we lock them up. They are not locked up for their thoughts (well, in some cases) but rather for their actions.