[JPws_Prntr_Fngr]

> I stopped taking the train after a ride where we had to evacuate because someone was smoking fentanyl (apparently even the second-hand smoke can affect a person).

This is obviously proscribed under most localities' current regulations, since we mostly ban regular tobacco smoking indoors. Legalization advocates are not advocating for tolerating involuntary exposure or other externalities. Enforce the existing laws against second hand smoke, DUI, etc.

> we have people using in my neighborhood park

Annoying for sure. In my neighborhood, dog shit and hobo piss are omnipresent sidewalk hazards. But I don't think there's a solution to the dregs of society being a highly visible/smellable nuisance - real estate tends to be stratified by class, and I'm not financially equipped to insulate myself like the upper ones. Until we decide to actually deal with the economics that produce these frictions, it's just a fact of life.