(a) Interference with the conduct of public business in public buildings is:

(1) Conduct at or in any public building owned, operated or controlled by the state or any of its political subdivisions so as to knowingly deny to any public official, public employee or any invitee on such premises, the lawful rights of such official, employee or invitee to enter, to use the facilities or to leave any such public building;

(2) knowingly impeding any public official or employee in the lawful performance of duties or activities through the use of restraint, abduction, coercion or intimidation or by force and violence or threat thereof;

(3) knowingly refusing or failing to leave any such public building upon being requested to do so by the chief administrative officer, or such officer’s designee, charged with maintaining order in such public building, if such person is committing, threatens to commit or incites others to commit, any act which did or would if completed, disrupt, impair, interfere with or obstruct the lawful missions, processes, procedures or functions being carried on in such public building;

(4) knowingly impeding, disrupting or hindering the normal proceedings of any meeting or session conducted by any judicial or legislative body or official at any public building by any act of intrusion into the chamber or other areas designated for the use of the body or official conducting such meeting or session, or by any act designed to intimidate, coerce or hinder any member of such body or any official engaged in the performance of duties at such meeting or session; or

(5) knowingly impeding, disrupting or hindering, by any act of intrusion into the chamber or other areas designed for the use of any executive body or official, the normal proceedings of such body or official.

(b) Aggravated interference with the conduct of public business is interference with the conduct of public business in public buildings, as defined in subsection (a), when in possession of any firearm or weapon as described in Kan. Stat. Ann. §§ 21-6301 or 21-6302, and amendments thereto.

(c) (1) Interference with the conduct of public business in public buildings is a class A nonperson misdemeanor:*

(2) Aggravated interference with the conduct of public business is a level 6, person felony.