Yet child porn is clearly a criminal act. Producing the media material would make you complicit. Kinda like if you went along with bank robbers to rob a bank, video tapped it and never reported it. You would be complicit of covering up the crime. I believe this distinction separates child porn from free speech.

Also, like yelling `fire` in a building is not a speech issue, it is a property rights issue in that you cause damage to the owners of the property.