Mo. Rev. Stat. § 562.026: Culpable mental state, when not required.

A culpable mental state is not required:

(1) If the offense is an infraction and no culpable mental state is prescribed by the statute defining the offense; or

(2) If the offense is a felony or misdemeanor and no culpable mental state is prescribed by the statute defining the offense, and imputation of a culpable mental state to the offense is clearly inconsistent with the purpose of the statute defining the offense or may lead to an absurd or unjust result.