Okla. Stat. tit. 21, § 1320.2
It shall be unlawful and shall constitute incitement to riot for a person or persons, intending to cause, aid, or abet the institution or maintenance of a riot, to do an act or engage in conduct that urges other persons to commit acts of unlawful force or violence, or the unlawful burning or destroying of property, or the unlawful interference with a police officer, peace officer, fireman or a member of the Oklahoma National Guard or any unit of the armed services officially assigned to riot duty in the lawful performance of his duty.
Laws 1969, HB 1138, c. 89, § 2, emerg. eff. March 25, 1969.