I really like this poster. The shadow of the hand and cigarette appears to be a hand holding a gun. It would look even better with smoke coming out of the cigarette, making it look like the gun was just fired.
30 Brilliant Anti Smoking Advertisements for your inspiration - Best Posters and Campaigns
PSA about smoking and what it does to your body. Organs are balloons next to a cigarette representing what smoking does to your organ, a balloon next to a cigarette and smoke wont last long, just like your organs won't last if you smoke