What was the worst unanimous Supreme Court decision?

[Anti-Trump Truth Socialite JD Vance Enjoying Juror]

The Dobbs decision today got me thinking about the Supreme Court's controversial history. Unanimous decisions are actually the most common outcome, but most of the Supreme Court's "greatest hits" (Dred Scott, Plessy v Ferguson, Lochner, Buck v Bell, Bowers v Hardwick, etc.) had at least one dissenter.

In my opinion the worst unanimous decision was Korematsu v. United States, though Schenck v. United States is also up there. They're pretty well-known, but I don't know as much about Supreme Court history as some others on this forum.

[Anti-Trump Truth Socialite JD Vance Enjoying Juror]

Korematsu was not unanimous; there were three dissents.

Unsurprisingly, the Court’s Indian law jurisprudence is replete with this kind of case. Johnson v. M‘Intosh (Indians do not “own” land they occupy) and Lone Wolf v. Hitchcock (Congress can unilaterally break treaties with tribes) are the two most obvious examples.

For some reason I remembered Korematsu as being unanimous. Good catch.