Missouri Revised Statutes Title XXXVIII. Crimes and Punishment; Peace Officers and Public Defenders § 578.153. Peace officer's and conservation agent's powers to enforce--failure to obey peace officer or conservation agent, penalty

1. A peace officer as defined by chapter 590 who reasonably believes that a person has violated section 578.151 or 578.152 may order the person to desist. The offense of failure to obey the order of a peace officer to desist from conduct in violation of sections 578.151 and 578.152 is a class A misdemeanor.

2. Any law enforcement officer shall and any agent of the conservation commission may enforce the provisions of sections 578.151, 578.152 and this section and arrest violators of such sections.

3. The conduct declared unlawful by sections 578.151 and 578.152 shall not include any lawful activity by the landowner or persons in lawful possession of the land.