The anti-pornography movement, including its anarchist members and supporters, is not monolithic. Some dislike dirty books and movies, but support people's freedom to produce and consume such material. They rely on argument and protest in an attempt to change the attitudes of those who like porn, encouraging them to refrain from indulging in it, and do not support censorship. Others, again including some anarchists, feel that physical attacks on porn stores or government-mandated censorship are acceptable tactics in the fight against porn. While only the latter position is censorious, and therefore unanarchic, the former position, which is contemptuous of depictions of sex is also problematic in a movement which purportedly favors sexual freedom.
Pornography is simply a depiction, in words or pictures, of sexual activity.
Most people find sex a good, pleasurable activity and looking at pornography is sexually arousing for many people. Anti-porn people frequently say that the images of women in porn are degrading and offensive to women. However, while some women certainly are offended by pornographic images they find degrading, other women enjoy pornography. Additionally, the images of women in porn are no more sexist and demeaning towards women than the images of women in most literature and visual media, from novels to movies to TV to magazine ads. In a sexist society, most images of women are going to contain at least some of the sexist attitudes common to both women and men.