Okla. Stat. tit. 21, § 302
Any person who alone or in concert with others willfully disturbs, disrupts or interferes with any session, meeting or proceeding of either house of the State Legislature or any committee of either house of the State Legislature, whether within or outside the presence of either house of the State Legislature or any committee, by:
4. Congregating with other persons and refusing to comply with a lawful order of the police or security officer to disperse;
shall be guilty of a misdemeanor.
R.L. 1910, § 2164; Amended by Laws 1981, HB 1134, c. 148, § 1, emerg. eff. May 8, 1981.