Okla. Stat. tit. 21, § 21-774: Defenses in criminal libel action

In all criminal prosecutions or indictments for libel, the truth

thereof may be given in evidence to the jury, and if it be made to

appear by the defendant that the matter charged as libelous was

true, and in addition thereto was published with good motives, and

for justifiable ends, or was a privileged communication, the

defendant shall be acquitted.