I think that's gonna be the trend of the thread, alot of people will fit at least one or two of those "criteria".
But in the end, I think the view is alot worse than it needs to be, simply because you tend to notice teenagers that fit all of those criteria a lot more (they make a lot more noise, or leave behind vandalised property for instance), than the people that just experiment a bit, and generally behave themselves.
As for me, I'll subscribe to the last one on the list too