The wardens and the superintendents and all prison officials shall uniformly treat the inmates with kindness. There shall be no corporal or other painful and unusual punishment inflicted upon inmates.
Wis. Stat. § 302.08
Lawfully incarcerated persons retain only a narrow range of protected liberty interests. Hewitt v. Helms, 459 U.S. 460, 103 S. Ct. 864, 74 L. Ed. 2d 675 (1983).