§ 151

(A)   Except as provided in this section, a landlord may not retaliate by increasing rent or decreasing services or by bringing or threatening to bring an action for possession after:
(1)   The tenant has complained to a governmental agency charged with responsibility for enforcement of a building or housing code of a violation applicable to the premises materially affecting health and safety:
(2)   The tenant has complained to the landlord of a violation under § 151.29;
(3)   The tenant has organized or become a member of a tenant's union or similar organization.