Today is Tuesday, Aug. 21, the 233rd day of 2018. There are 132 days left in the year.

Today’s Highlight in History

On August 21, 1831, Nat Turner launched a violent slave rebellion in Virginia resulting in the deaths of at least 55 whites. (Turner was later executed.)

On this date

In 1609, Galileo Galilei demonstrated his new telescope to a group of officials atop the Campanile in Venice.

In 1858, the first of seven debates between Illinois senatorial contenders Abraham Lincoln and Stephen Douglas took place.

In 1911, Leonardo da Vinci’s “Mona Lisa” was stolen from the Louvre Museum in Paris. (The painting was recovered two years later in Italy.)

In 1912, the Boy Scouts of America named its first Eagle Scout, Arthur Rose Eldred of Troop 1 in Rockville Centre, N.Y.

In 1940, exiled Communist revolutionary Leon Trotsky died in a Mexican hospital from wounds inflicted by an assassin the day before.

In 1959, President Dwight D. Eisenhower signed an executive order making Hawaii the 50th state.

In 1961, country singer Patsy Cline recorded the Willie Nelson song “Crazy” in Nashville for Decca Records. (The recording was released in October 1961.)

In 1963, martial law was declared in South Vietnam as police and army troops began a violent crackdown on Buddhist anti-government protesters.