A person is guilty of a misdemeanor, punishable by a fine of not more than $500.00, or by incarceration in the county jail for not more than 30 days, or both:

    (a) When the chief administrative officer of a publicly owned and operated institution of higher education, or his designee, notifies the person that he is such officer or designee and that the person is in violation of the properly promulgated rules of the institution; and

    (b) When the person is in fact in violation of such rules; and

    (c) When, thereafter, such officer or designee directs the person to vacate the premises, building or other structure of the institution; and

    (d) When the person thereafter wilfully remains in or on such premises, building or other structure; and

    (e) When, in so remaining therein or thereon, the person constitutes (1) a clear and substantial risk of physical harm or injury to other persons or of damage to or destruction of the property of the institution, or (2) an unreasonable prevention or disruption of the customary and lawful functions of the institution, by occupying space necessary therefor or by use of force or by threat of force.

     A person is guilty of a misdemeanor, punishable by a fine of not less than $200.00 and not more than $1,000.00, or by incarceration in the county jail for not more than 90 days, or both, who enters on the premises, building or other structure of a publicly owned and operated institution of higher education, with the intention to, and therein or thereon does in fact, constitute (a) a clear and substantial risk of physical harm or injury to other persons or of damage to or destruction of the property of the institution, or (b) an unreasonable prevention or disruption of the customary and lawful function of the institution, by occupying space necessary therefor or by use of force or by threat of force.

     This act shall take effect August 1, 1970.