On this date

In 1515,

Pope Leo X promulgated the bull “Inter sollicitudines” allowing the Catholic Church to review and censor books.

In 1937,

Margaret Mitchell won the Pulitzer Prize for her novel “Gone with the Wind.”

In 1948,

the Supreme Court, in Shelley vs. Kraemer, ruled that covenants prohibiting the sale of real estate to blacks or members of other racial groups were legally unenforceable.

In 1952,

the Kentucky Derby was televised nationally for the first time on CBS; the winner was Hill Gail, ridden by Eddie Arcaro.

In 1979,

Conservative Party leader Margaret Thatcher was chosen to become Britain’s first female prime minister.

In 1986,

an unmanned Delta rocket lost power in its main engine shortly after liftoff, forcing NASA to destroy it by remote control.

In 2007,

British girl Madeleine McCann vanished during a family vacation in Portugal nine days before her fourth birthday; her disappearance remains unsolved.

Ten years ago:

Big Brown won the Kentucky Derby by 43⁄4 lengths. (Filly Eight Belles finished second and then broke both front ankles; she was euthanized on the track.)

Five years ago:

Gunmen killed Chaudhry Zulfikar, Pakistan’s lead prosecutor investigating the assassination of ex-prime minister Benazir Bhutto, as he drove to court.

One year ago:

FBI Director James Comey told Congress that revealing the reopening of the Hillary Clinton email investigation just before election day came down to a choice between “really bad” and “catastrophic” options, but said he would have acted no differently.