Obstructing government operations.
576.030. 1. 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.
2. Obstructing government operations is a class B misdemeanor.
Penalty for obstructing enforcement.
254.290. Any person who shall obstruct or prevent or attempt to obstruct or prevent any officer, agent, employee or deputized person under this chapter or any such rules and regulations, while in the performance of his duties, or in the exercise of the right of entry, access or examination by any such officer or agent, shall, upon conviction thereof, be deemed guilty of a misdemeanor.