The Eighth Amendment of the Constitution provides that people residing in the United States will not be subjected to cruel and unusual punishment by the government. This guarantee also applies to prisoners. What constitutes cruel and unusual punishment is open to interpretation, thus prisoners and prison systems often disagree. The Supreme Court, guided by evolving standards of the day, establishes boundaries of cruel and unusual punishment in landmark cases. Some examples of cruel and unusual punishment include inhumane prison conditions and corporal punishment.