Prisoners' rights refer to the legal protections and entitlements that individuals retain even while incarcerated. These rights include access to basic necessities such as food, water, and medical care, as well as the right to communicate with the outside world and practice their religion. The Eighth Amendment of the U.S. Constitution prohibits cruel and unusual punishment, ensuring that prisoners are treated humanely. Additionally, prisoners have the right to due process, which means they cannot be punished without a fair hearing. They can also file grievances regarding their treatment and conditions within the prison system. Advocacy groups work to uphold these rights and address violations that may occur.