THE WALL STREET JOURNAL EDITORIALIZES: The Presumption of Guilt: The new liberal standard turns American due process upside down.

The last-minute accusation of sexual assault against Supreme Court nominee Brett Kavanaugh is an ugly spectacle by any measure. But if there is a silver lining, it is that the episode is providing an education for Americans on the new liberal standard of legal and political due process.

As Ms. Hill and Sen. Hirono aver, the Democratic standard for sexual-assault allegations is that they should be accepted as true merely for having been made. The accuser is assumed to be telling the truth because the accuser is a woman. The burden is on Mr. Kavanaugh to prove his innocence. If he cannot do so, then he is unfit to serve on the Court.

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This turns American justice and due process upside down. The core tenet of Anglo-American law is that the burden of proof always rests with the person making the accusation. An accuser can’t doom someone’s freedom or career merely by making a charge.

The accuser has to prove the allegation in a court of law or in some other venue where the accused can challenge the facts. Otherwise we have a Jacobin system of justice in which “J’accuse” becomes the standard and anyone can be ruined on a whim or a vendetta.

Another core tenet of due process is that an accusation isn’t any more or less credible because of the gender, race, religion or ethnicity of who makes it. A woman can lie, as the Duke lacrosse players will tell you. Ms. Hirono’s standard of credibility by gender would have appalled the civil-rights campaigners of a half century ago who marched in part against Southern courts that treated the testimony of black Americans as inherently less credible than that of whites. Yet now the liberal heirs of those marchers want to impose a double standard of credibility by gender.

A third tenet of due process is the right to cross-examine an accuser. The point is to test an accuser’s facts and credibility, which is why we have an adversarial system. The denial of cross-examination is a major reason that campus panels adjudicating sexual-assault claims have become kangaroo courts.

Well, to be fair, this “standard” will be flipped 180 degrees as soon as Democrats think it’s in their advantage to do so.