Mo. Rev. Stat. § 99.886
99.886 Discrimination in sale or rental prohibited.
99.886. Discrimination in sale or rental prohibited. — In the sale or rental of the property, or any portion of such property, no person shall be discriminated against because of such person's race, color, religion, sex or national origin.
(L. 1992 H.B. 1434 & 1490 § 5 subsec. 3 subdiv. (4))