If I strongly suspect someone of using drugs should I warn others around them?

[dorsal]

This country treats drugs and drug-use like witch-burnings. The puritan roots are still there.

Smoke weed, get caught, end up with a felony. Now you're branded like an outcast-reject (although you're no different than anyone else) And people LOVE any chance to feel superior to someone, or be able to label, cast-out, discriminate or reject. They LIVE for it.

The puritan creeps would LOVE to get their hands on a stoner hippie boy and make SURE he can't go to school, get a job, be around children, vote, travel, own a gun, etc etc.

Since you've decided to play 'investigator' on your own, who knows, it's like a roulette wheel.

Maybe he's just a smart kid from a bad family who wants to see if he can make crystal meth. These types of outlaws are all over. Guess what, they give up and become computer engineers.

Maybe he's a destructive asshole who sucks everyone into a black hole. Those people appear punctually throughout life. Tell your friends you avoid them. If they can't or don't, then they're weak and nothing can help them anyway.

Unless you're talking about somebody actively pushing drugs into people's faces, or there are patterns of violence arising from it, or one of your friends is being adversely affected, then you should resolve the problem yourself, without the police.

The police are not your friend. They are AS destructive as the drugs themselves. They take a drug situation and blow it up about ten times worse. They shatter families, imprison kids, brand and label them, it's a huge industry, it's a vicious circle, and believe it or not, it's no one's fault. It's an experiment.