When they wanted to stop the smoking. They got rid of all the billboards glorifying smoking, they put out ads about how dangerous smoking is and most of all they put on a hefty tax onto a cigarette. By doing all tge above they basically made people very sensitive to smoking.
I know its not exactly the same but try to compare it to our culture for a second. Get rid of violent movies and video games. Teach good will to others no self servingv society and put a hefty tax on weapons – wont be available so easily.
I know this sounds very extreme but the truth is that if we dont solve the core of the problem the problem will manifest itself ifvnot in this way then in others.