Nor should they be based on minority or obsolete opinions. Nor should the majority force its morality on a minority. The law should be a force for unity not division. The Failure of Propaganda. The reason is found in the difference between propaganda and education.
Propaganda is based on trust while education is based on reasonable persuasion.
Propaganda fails when trust fails, often leading to an effect opposite of that desired. Understanding derived from education grows as it encounters conflicts and seeks resolution, coming closer to truth and more complete understanding. Being the United States is a democracy, requiring truthful information, and there is a tradition of government distrust in our country, the use of propaganda is limited. Our government should try truthful, reasonable persuasion. One of the biggest problems of the unregulated black market in drugs, is their easy access to children, even in grade school.