I only visit Los Angeles about once a year (to visit family). I smell pot just about EVERYWHERE. I especially pick up the 'fragrance' as we're passing other cars on the freeways. *Many* people driving around LA (and lots of other US cities) are driving under the influence of marijuana. Day and night.
How many heads did you see on the ground in LA. My guess is zero.
Also, I hate the smell of smoked tobacco.
Should we ban tobacco?