There are normally editorial guidelines for student newspapers that limit what can be discussed. The obvious area where censorship is unavoidable is advocacy of illegal activities in such a manner as to create potential for liability. For example, while an editorial might advocate changing alcohol or drug laws, giving information on how to forge an ID for underage drinking or places to buy heroin might have liability consequences. Similarly, students, as all other writers, are limited by libel laws. Child pornography would obviously be unacceptable, as would be most sexually explicit material. Many student newspapers have guidelines forbidding "hate speech" based on religion, race, or sexual preference, as this might contribute to a hostile environment for members of various groups on campus.