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.
Fume Leads To Death by Heng Chun Liow - Infographics
This picture is depicting that cigarettes kill. Gun symbolizes the killing Cigarettes are the bullets with the gun. Moral is don't smoke it kills.