"Do not speak evil [*slander] of one another, brethren. He who speaks evil of a brother [*slander] and judges [**] his brother, speaks evil of the law and judges the law. But if you judge the law [***a judge], you are not a doer of the law but a judge. There is one Lawgiver, who is able to save and to destroy. Who are you to judge another?"
* Katalaleo; from kata, against, and laleo, to speak. To insult, defame, slur, slander. The word is rather broad in meaning, taking in every sort of defamation or verbal aspersion. The fundamental notion is that of speaking about a person in a manner which is aimed at maligning and discrediting him or injuring his reputation, roughly equivalent to the modern slang "to bad mouth" (Jas 4:11; 1 Pe 2:12; 3:16)
** Krino; to discriminate between good and evil, select, choose out the good. In the NT it means to judge, form or give an opinion after separating and considering the particulars of a case. To judge, try in a solemn manner, spoken of men, of God, of Christ as the God-Man; to judge, pass sentence, or give one's opinion in a private manner; to discern, form a mental judgement or opinion; to judge, evaluate, esteem, or perhaps to merely state a preference; to judge properly, determine; to condemn; to furnish matter or occasion for condemnation.
*** Krites; from Krino, to judge. A judge.
So, you see, even if we are right in our assessment of another, to give the assessment in a katalaleo, krino, krites way is not our right to do. We have become the Orthodox KKK and such is not orthodox at all. In fact, we are commanded to not conduct ourselves in such a way. Why? Because God is the judge of the individual, not us. This does not negate our responsibility to judge what is truth and what is not, (see: Quit Repeating "Judge Not!" We Are Supposed To "Judge"!) but the focus should be on the truth and not on the person. Many JTO articles have been prompted by what I have seen others do or say, but the posts have focused on the subject, the topic, with an exposition on the truth, and have not been about the person who said or did it. But have there been exceptions?
"And I, brethren, when I came to you, came not with excellency of speech or of wisdom, declaring unto you the testimony of God. For I determined not to know any thing among you, save Jesus Christ, and him crucified. And I was with you in weakness, and in fear, and in much trembling. And my speech and my preaching was not with enticing words of man's wisdom, but in demonstration of the Spirit and of power; That your faith should not stand in the wisdom of men, but in the power of God. 1 Cor. 2:1-5