On April 4, 1968,

Today is Tuesday, April 4.

civil rights leader Martin Luther King Jr., 39, was shot and killed on a balcony of the Lorraine Motel in Memphis, Tennessee.

In 1818,

Congress decided the flag of the United States would consist of 13 red and white stripes and 20 stars, with a new star to be added for every new state of the Union.

In 1841,

President William Henry Harrison succumbed to pneumonia one month after his inauguration, becoming the first U.S. chief executive to die in office.

“Dixie” was performed publicly for the first time by Bryant’s Minstrels at Mechanics’ Hall in New York.

President Abraham Lincoln, in a letter to Kentucky newspaper editor Albert G. Hodges, wrote: “I claim not to have controlled events, but confess plainly that events have controlled me.”

In 1859, In 1864, In 1887,

Susanna Madora Salter became the first woman elected mayor of an American community: Argonia, Kansas.

In 1917,

the U.S. Senate voted 82-6 in favor of declaring war against Germany (the House followed suit two days later by a vote of 373-50).

the Navy airship USS Akron crashed in severe weather off the New Jersey coast with the loss of 73 lives.

12 nations, including the United States, signed the North Atlantic Treaty in Washington, D.C.

Johnny Stompanato, an enforcer for crime boss Mickey Cohen and the boyfriend of actress Lana

In 1933, In 1949, In 1958,

Turner, was stabbed to death by Turner’s teenage daughter, Cheryl Crane, who said Stompanato had attacked her mother.

more than 130 people, most of them children, were killed when a U.S. Air Force transport plane evacuating Vietnamese orphans crash-landed shortly after takeoff from Saigon. Microsoft was founded by Bill Gates and Paul Allen in Albuquerque, New Mexico.

the space shuttle Challenger roared into orbit on its maiden voyage. (It was destroyed in the disaster of January 1986.)

Sen. John Heinz, R-Pa., and six other people, including two children, were killed when a helicopter collided with Heinz’s plane over a schoolyard in Merion, Pennsylvania.

In 1975, In 1983, In 1991, Five years ago:

Republican presidential candidate Mitt Romney unleashed a strong attack on President Barack Obama’s truthfulness, accusing him of running a “hide-and-seek” reelection campaign in an address to newspaper editors and publishers. A federal judge sentenced five former New Orleans police officers to prison for the deadly Danziger Bridge shootings in the chaotic days following Hurricane Katrina. (The verdicts in the case were later set aside by the judge, who cited prosecutorial misconduct; the officers pleaded guilty in 2016 to reduced charges.)

“Take the attitude of a student, never be too big to ask questions, never know too much to learn something new.” — Og Mandino, American author (1923-1996)