[HarrisonH]

My two cents are that outdoor cigarette smoke is quite honestly the least of our worries as a society. Sure, the smoker should be alarmed that they are directly inhaling the carcinogens associated with tobacco, particularly the additives used, and indoor second hand smoke can build to toxic levels quick.
I think that in the broad spectrum of things, there is a flood of other toxins in our society that far outweighs the slight addition of outdoor second hand smoke that may set off flares of asthma or sinusitis, or even general discomfort. My intuition tells me that in most cases those conditions are much more largely caused by emissions from cars, fumes from VOCs in virtually everything from your furniture, paint, carpets, and cleaning agents and more, and general pollution from the industrial dependency and lack of environmental stringencies in other aspects of our society. To start blaming the second hand smoke of a guy in a park is ludicrous, IMO, and there are much more important battles to fight. Look at the bright side, smokers are flooding tax dollars into our economy. Just stand upwind.