N.D. Cent. Code § 34-08-13: Member or officer of an organization or association not liable for agents' acts - Exception

No officer or member of any association or organization, and no association or organization, participating or interested in a labor dispute, may be held responsible or liable in any court of this state for the unlawful acts of individual officers, members, or agents except upon clear proof of actual participation in, or actual authorization of, such acts, or of ratification of such acts, after actual knowledge thereof.