The following advice is given with the assumption that you have already committed your media concerns to much prayer. This excellent article was written by my friend Larry Poland at Mastermedia. I believe you will find it most helpful. Thou shalt respond to the creators of media. Let the creators of film, TV, radio, and print media know your convictions.
Silence is a vote in favor of whatever media creators do.
Express your appreciation as well as your concerns. Thou shalt indicate clearly the position or perspective from which you write. State whether you are writing as a parent, a victim of child abuse, or a company president. Thou shalt communicate to the top of the structure. Address the person with the power to do something about the issue.