I'd do 4 things (and I'm a n00b who still smokes!)
1. Plant tobacco.
2. Learn how to DIY my own tobacco tea to add to 0-nic juice.
and while I'm waiting for my tobacco to grow (I do NOT have a green thumb!):
3. Make up T-shirts that say "I'll respect your right not to inhale smoke when you respect mine!" with a symbol showing a sharpie-sized e-cig with a glowing bright blue end, putting out vapor, with the forbidden symbol over it, and an arrow leading from that forbidden sign to a smoking cigarette over a pile of butts, WITHOUT the forbidden sign.

4. Start smoking and leaving butts all over outisde gov't buildings, Dr offices, cancer centers etc.
BTW I have not left a .... on the ground for 10+years! And I never smoke within 20 feet of a restaurant doorway etc. Nor smoke in restrooms.
Or maybe organize back-to-back "smoke-in" and "vape-in" where the 1000 smokers smoke for hours outside Congress, leaving ALL their butts, for 1 day, then the next day 1000 vapers vape (0-nic I guess) and clean up any butts the D.C. government missed the day before. And blog the photos (not to mention inviting the press.)