(a) A person commits the crime of obstructing government operations if he purposely. obstructs, impairs, hinders or perverts the performance of a governmental function by the use or threat of violence, force or other physical interference or obstacle.

    (b) Obstructing governmental operations is a class B misdemeanor.

(Code 1964, § 7.995)

     State law reference(s)--Similar provisions, RSMo. § 576.030.