No, libertarians do not oppose the porn industry. Pornography, when produced by consenting and well-informed adults, should never be hindered or obstructed by the state, observing the first amendment to the U.S. Constitution that outlines free expression.
While libertarians may have moral objections to pornography, they adhere to the principles of free-market capitalism, allowing the free exchange between businesses that produce pornographic content and those who wish to consume it. Individuals are free to indulge or abstain from pornographic content. It is their choice.
Some libertarians urge people not to consume pornography as it can lead to mentally unhealthy addiction, thus creating an atmosphere unconducive to freedom. They argue that virtue and moral living lead to maximum freedom and that pornography addiction can subtract from mental clarity, which is imperative to liberation.
Feminists and women's rights groups have presented arguments that pornography becomes detrimental to the liberty of women by creating a society that passively condones the objectification of women through normalizing exaggerated, sensationalized, provocative and profane sexual interaction.
Feminist opposition argues that exposure to traditional pornography dynamics--exhibiting overt male dominance--undermines female agency and sovereignty, thus weakening the fight for women's liberation.
While libertarians acknowledge and appreciate the intellectual acuity of the opposing arguments, they maintain that it is not the government's job to legislate morality. Even if libertarians oppose pornography, they support the industry's right to produce content to sell and distribute to willing buyers.
Libertarians who oppose the porn industry believe education, organic societal change, and free-market solutions can bring about progress without the interference and encroachment of the state. Ultimately, however, libertarians believe other people's personal lives and choices are none of their business.
For more information, see 'What is Libertarianism?'
