Don’t knock the “public health establishment” and the CDC. If they weren’t on the job you and I would have died of SARS years ago. (Google that, and know real fear.)
The CDC doesn’t talk about second hand smoke out of doors, but they have plenty to say about air pollution (including diesel trucks). Check out their website at cdc.gov, which gives health information about almost all the problems you could meet living in the US. Give it a visit and see what they have to offer.
And yes, as an ex-smoker who quit after a bout of pneumonia, I would classify anyone who inflicts second-hand smoke on someone else as a “rodef.” (Disclaimer – I’m not a posek, but that’s my personal feeling.)
My right to breathe beats your “right to do want I want.” You can do without smoking (try it). I can’t do without breathing.