Faith in the facts about "shaken baby syndrome" has recently been shaken, but that didn't stop the U.S. Supreme Court from telling the 9th circuit that it overstepped its bounds in overturning a guilty verdict in California state court shaken baby case. From the per curiam (PDF):
In light of the evidence presented at trial, the Ninth Circuit plainly erred in concluding that the jury’s ver- dict was irrational, let alone that it was unreasonable for the California Court of Appeal to think otherwise. See §2254(d). Doubts about whether Smith is in fact guilty are understandable. But it is not the job of this Court, and was not that of the Ninth Circuit, to decide whether the State’s theory was correct. The jury decided that question, and its decision is supported by the record.
Jason Mazzone at Balkinization points out that the Court's decision was no surprise -- the Supreme Court had vacated the 9th circuit panel's decision twice before, pointedly drawing "the panel’s attention to this Court’s opinions highlighting the necessity of deference to state courts" on habeas review.
Be that as it may, Justice Ginsburg, joined by Justices Breyer and Sotomayor, dissented: