OK, so maybe that's not altogether new. This particular example just came to my attention.
Alarming headline: This stimulant can kill, yet you can legally buy it online. Why? Fear! Fire! Foes!
Yes, you can buy caffeine online! In pure form!
He would concentrate and reduce it to caffeine powder,
and then sell it to ghetto kids to wreck their brains.
Alas, the lyrics aren't online, or at least not anywhere indexed. Here's a performance (words vary from what I remember from some long-ago convention tape).
You can buy pure DHMO even more easily, and that has a far deadlier record, even when not taken internally.