(A)   (1)   No person shall knowingly resist or obstruct the performance by one known to the person to be a peace officer or correctional institution employee of any authorized act within his or her official capacity.
      (2)   In addition to any other sentence that may be imposed, a court shall order any person convicted of resisting or obstructing a peace officer to be sentenced to a minimum of 48 consecutive hours of imprisonment or ordered to perform community service for not less than 100 hours as may be determined by the court. The person shall not be eligible for probation in order to reduce the sentence of imprisonment or community service.
      (3)   A person convicted for a violation of this section whose violation was the proximate cause of injury to a peace officer is guilty of a Class 4 felony.
   (B)   For purposes of this section, the term CORRECTIONAL INSTITUTION EMPLOYEE shall mean any person employed to supervise and control inmates incarcerated in a penitentiary, state farm, reformatory, prison, jail, house of correction, police detention area, half-way house, or other institution or place for the incarceration or custody of persons under sentence for offenses or awaiting trial or sentence for offenses, under arrest for an offense, a violation of probation, a violation of parole, or a violation of mandatory supervised release, or awaiting a bail setting hearing or preliminary hearing, or who are sexually dangerous persons or who are sexually violent persons.
(ILCS Ch. 720, Act 5, § 31-1) Penalty, see § 130.99