Today is Tuesday, May 17, the 138th day of 2016. There are 228 days left in the year.

Today’s birthdays: Actor Peter Gerety is 76. Actor Bill Paxton is 61. Boxing Hall-of-Famer Sugar Ray Leonard is 60. Actor-comedian Bob Saget is 60. Sports announcer Jim Nantz is 57. Singer Enya is 55. Talk show host-actor Craig Ferguson is 54. Singer Jordan Knight is 46. Actress Sasha Alexander is 43. Actor Tahj Mowry is 30.

In 1792, the New York Stock Exchange had its origins as a group of brokers met under a tree on Wall Street.

In 1875, the first Kentucky Derby was run.

In 1954, a unanimous Supreme Court handed down its Brown v. Board of Education of Topeka decision, which held that racially segregated public schools were inherently unequal, and therefore unconstitutional.

In 1973, a special committee convened by the Senate began its televised hearings into the Watergate scandal.

In 1996, President Bill Clinton signed “Megan’s Law,’’ a measure requiring neighborhood notification when sex offenders move in.

In 2004, Massachusetts became the first state to allow legal same-sex marriages.

In 2011, Arnold Schwarzenegger issued a statement confirming a report that he had fathered a child with a woman on his household staff more than a decade earlier.

In 2015, a shootout erupted between bikers and police outside a Twin Peaks restaurant in Waco, Texas, leaving nine of the bikers dead and 20 people injured.