Editorial: Defendants convicted by non-unanimous juries should get new trials

In April, the Supreme Court ruled that the Constitution requires that a jury must be unanimous in convicting a defendant of a serious crime. A lot of Americans — including those who have seen the classic film “12 Angry Men,” in which a lone holdout convinces other jurors to acquit a defendant — probably thought that was already the rule everywhere. But two states, Louisiana and Oregon, had allowed convictions by a non-unanimous jury, as had the territory of Puerto Rico.