P H Y Below is an overview of the scientific and cross-cultural research, and legal and historical data on sexually explicit material. Popular beliefs are followed by research review. Yes, there is. Obscenity is sexual words and images which are not protected by Constitutional guarantees of free speech. To be illegally obscene, a work must appeal to the prurient interests, depict sex in a patently offensive way, and lack serious literary, artistic, political or scientific value.
Pornography is material designed to arouse and has no legal or consistent definition.
Each person's definition depends on her upbringing, sexual preference and viewing context. No reputable research in the U.S., Europe or Asia finds a causal link between pornography and violence. Exposure to such material does not cause people to change their sexual preferences or commit acts against their will. Studies on violent pornography are inconsistent. Agitation will boost whatever follows it, aggression or generosity.