President William Henry Harrison dies after serving only 32 days in office on this day in 1841. Harrison holds the unfortunate presidential record of shortest term in office.

Isoroku Yamamoto, perhaps Japan’s greatest strategist and the officer who would contrive the surprise air attack on U.S. naval forces at Pearl Harbor, is born on April 4, 1884.

Poet and novelist Maya Angelou—born Marguerite Johnson—is born in St. Louis, Missouri. Her parents divorced when she was three, and she and her brother went to live with their grandmother in Stamps, Arkansas. When she was eight, she was raped by her mother’s boyfriend. When she revealed what happened, her uncles kicked the culprit to death. Frightened by the power of her own tongue, Angelou chose not to speak for the next five years.

On April 4, 1933, a dirigible crashes in New Jersey, killing 73 people in one of the first air disasters in history. The Akron was the largest airship built in the United States when it took its first flight in August 1931. In its short life of less than two years, it was involved in two fatal accidents.

Clocking in at three hours and 32 minutes, William Wyler’s Technicolor epic Ben-Hur is the behemoth entry at the 32nd annual Academy Awards ceremony, held on this day in 1960, at the RKO Pantages Theatre in Hollywood. Setting an Oscar record, the film sweeps 11 of the 12 categories in which it was nominated, including Best Picture, Best Director and Best Actor (Charlton Heston).

Just after 6 p.m. on April 4, 1968, Martin Luther King Jr. is fatally shot while standing on the balcony outside his second-story room at the Lorraine Motel in Memphis, Tennessee. The civil rights leader was in Memphis to support a sanitation workers’ strike and was on his way to dinner when a bullet struck him in the jaw and severed his spinal cord. King was pronounced dead after his arrival at a Memphis hospital. He was 39 years old.

The “Twin Towers” of the World Trade Center officially open in New York City. The buildings replaced the Empire State Building as the world’s tallest building. Though they would only hold that title for a year, they remained a dominant feature of the city’s skyline and were recognizable the world over long before they were destroyed in a terrorist attack in 2001.

On April 4, 1975, at a time when most Americans used typewriters, childhood friends Bill Gates and Paul Allen found Microsoft, a company that makes computer software. Originally based in Albuquerque, New Mexico, Microsoft relocated to Washington State in 1979 and eventually grew into a major multinational technology corporation. In 1987, the year after Microsoft went public, 31-year-old Gates became the world’s youngest billionaire.

On April 4, 2007, syndicated talk radio host Don Imus ignites a firestorm after making racially disparaging remarks about the Rutgers University women’s basketball team, insulting their appearance and tattoos and, most infamously, calling them “nappy-headed hos.” After a nationwide torrent of criticism, Imus apologized and lost his job but ultimately salvaged his career.

On April 4, 2013, one of America’s best-known and most influential movie critics, Roger Ebert, who reviewed movies for the Chicago Sun-Times for 46 years and on TV for 31 years, dies at age 70 after battling cancer. In 1975, Ebert started co-hosting a movie review program on TV with fellow critic Gene Siskel that eventually turned them both into household names and made their thumbs-up, thumbs-down rating system part of American pop culture.