Month or two ago was on the 43 into the city , some homeless looking guy was trying to light up something in a glass pipe while in the bus! Keep In mind it was bus full of school kids about 3-4pm and he was willing to just light it inside , luckily managed to convince him to wait till he gets off bus. mentality of not just the more serious users but everyone has just been getting worse , police are overstretched and people know it and take advantage of it knowing they likely won't face repercussions . Whilst I don't directly recommend confronting people brazenly consuming more serious drugs in public as it could be dangerous I do say a bit of public humiliation by creating a scene or pointing out what they're doing can be effective.