What's needed is a solution where everyone feels they've won. Just imagine how famous the person who thinks up a really successful solution is going to be. What a golden opportunity to channel some of your creative energy into benefiting mankind. When the movie industry was threatened with government censorship, they imposed self censorship, which has the additional benefits of making them appear public-spirited, while still maintaining full control of the situation. Movies, after some time, added the present-day ratings code, which acts as a guide to avoiding movies that might offend with their content.
Television is self-regulating, with a hierarchy of self censorship.
In other words, the web, at many levels, can keep its own house in order. And we need a symbol. Something to identify sites that are self-censored. Eastern Philosophy speaks of the Superior man and the Inferior man. The Inferior man is governed by law.