2013: Three people are killed and more than 200 injured after two bombs go off within seconds of each other near the finish line of the Boston Marathon. Brothers Dzhokhar and Tamerlan Tsarnaev were eventually identified as suspects, with Tamerlan dying following an April 19 shootout with police and Dzhokhar being captured after a manhunt in Watertown, Massachusetts, later the same day. Dzhokhar was found guilty on 30 counts on April 8, 2015, and was sentenced to death on May 15, 2015.
2001: Punk music singer-songwriter Joey Ramone, best known as the lead singer of the punk rock band the Ramones, dies of lymphoma at the age of 49 in New York City. Later in the year, he would be elected to the Rock and Roll Hall of Fame as a member of the Ramones.
2000: Cal Ripken Jr. of the Baltimore Orioles becomes the 24th major-league player to reach 3,000 hits, hitting a single off Minnesota Twins relief pitcher Hector Carrasco in Minneapolis, Minnesota.
1998: Cambodian dictator Pol Pot, who had led the Khmer Rouge since 1963, dies at the age of 72 while under house arrest by a faction of the Khmer Rouge in Anlong Veng, Kingdom of Cambodia. The faction claimed he died from heart failure, but rumors have persisted that he was poisoned. During Pol Pot's time in power from 1975 to 1979, he imposed agrarian socialism, forcing urban dwellers to relocate to the countryside to work in collective farms and forced labor projects. It is estimated that 1 to 3 million people died due to his policies while dictator. After being forced from power in 1979, Pol Pot spent nearly 20 years hiding in the jungle near the border of Cambodia and Thailand.
1997: Actress Maisie Williams, who plays Arya Stark on HBO's "Game of Thrones," is born in Bristol, England.
1992: Billionaire Leona Helmsley is sent to jail for tax evasion. Helmsley, a hotel operator and real estate investor whose flamboyant personality and tyrannical behavior earned her the nickname "Queen of Mean," would serve 18 months in prison followed by two months under house arrest.
1990: Swedish actress Greta Garbo, best known for movies such as "Ninotchka," "Anna Christie," "Anna Karenina" (pictured) and "Grand Hotel," dies of pneumonia and renal failure at the age of 84 in New York City. Garbo, an international star and icon during Hollywood's silent and classic periods, was nominated for three Academy Awards during her career.
1990: Actress Emma Watson, best known for playing Hermione Granger in the "Harry Potter" film franchise, is born in Paris, France. Watson, who moved to England at the age of 5, has also appeared in movies like "My Week with Marilyn," "The Perks of Being a Wallflower" and the 2017 live-action Disney version of "Beauty and the Beast."
1989: A day after the death of Hu Yaobang, a liberal reformer and former Communist Party general secretary, the Tiananmen Square protests of 1989 begin in Beijing, China. Student demonstrators would occupy the square in the heart of the country's capital for seven weeks until a military crackdown on June 3-4 resulted in bloodshed. Estimates of those killed in the crackdown range from several hundred to several thousand.
1989: A human crush results in the deaths of 96 Liverpool soccer fans during the FA Cup semifinal match between Liverpool and Nottingham Forest at Hillsborough Stadium in Sheffield, England. The incident remains the worst stadium-related disaster in British history and one of the world's worst soccer disasters. Pictured is a memorial at Liverpool's stadium to those who died in the incident.
1986: In retaliation for an April 5 bombing of a West Berlin dance club that killed three people, including two U.S. servicemen, and injured 229 people, the U.S. conducts major bombing raids against Libya. Eightteen F-111 bombers struck a Tripoli airfield, a frogman training center at a naval academy, and the Bab al-Azizia barracks in Tripoli. There were 40 reported Libyan casualties, and one U.S. plane was shot down, resulting in the death of two airmen.
1983: Tokyo Disneyland opens. The theme park is consistently ranked the world's third most visited theme park, behind only its American sister parks, Magic Kingdom in Florida and Disneyland Park in California.
1982: Actor and comedian Seth Rogen, best known for movies such as "The 40-Year-Old Virgin," "Knocked Up" and "Pineapple Express," is born in Vancouver, British Columbia, Canada.
1980: French philosopher and writer Jean-Paul Sartre, one of the key figures in the philosophy of existentialism, dies of edema of the lung at the age of 74 in Paris, France. He was awarded the 1964 Nobel Prize in Literature and refused it, saying that he always declined official honors and that "a writer should not allow himself to be turned into an institution." He was the first Nobel Laureate to voluntarily decline the prize.
1971: At the 43rd Academy Awards, George C. Scott, a Best Actor winner for "Patton," becomes the first actor to reject an Oscar, claiming that the Academy Awards were "a two-hour meat parade, a public display with contrived suspense for economic reasons." Scott's Oscar was one of seven the film won that night, including Best Picture, Best Director for Franklin J. Schaffner, and Best Original Screenplay. The Beatles also won their only Oscar, taking Best Original Song Score for their movie "Let It Be."
1967: Dara Torres, a 12-time Olympic medalist and the first and only swimmer from the United States to compete in five Olympic Games (1984, 1988, 1992, 2000 and 2008), is born in Beverly Hills, California. Torres is also the oldest swimmer to ever earn a spot on the U.S. Olympic team, being 41 when she made the team for the 2008 Summer Olympics in Beijing, China.
1965: The Supremes' "Back in My Arms Again" is released. The song would become the fifth consecutive and overall No. 1 song for the group on the Billboard Hot 100 pop singles chart and also topped the soul chart for a week.
1959: Actress Emma Thompson, best known for movies such as "Howards End," "The Remains of the Day," "In the Name of the Father," "Sense and Sensibility," "Love Actually" and "Saving Mr. Banks," is born in London, England. She has won Oscars for Best Actress for "Howards End" and for Best Adapted Screenplay for "Sense and Sensibility," and has been nominated for Best Actress three other times.
1958: The first Major League Baseball game on the West Coast takes place, with the newly relocated San Francisco Giants and Los Angeles Dodgers squaring off at Seals Stadium in San Francisco. The former New York Giants beat the former Brooklyn Dodgers 8-0.
1955: McDonald's dates its founding to the opening on this day of a franchised restaurant by Ray Kroc in Des Plaines, Illinois. The restaurant was actually the ninth McDonald's overall, with the first opening in 1940. Kroc subsequently purchased the chain from the McDonald brothers and oversaw its worldwide growth.
1953: Charlie Chaplin surrenders his U.S. re-entry permit rather than face proceedings by the U.S. Justice Department. Chaplin was accused of sympathizing with Communist groups. Chaplin, who had left the country to premiere his film "Limelight" in his hometown of London, would settle permanently in Switzerland and not make a return visit to America until 1972. Chaplin is seen here in a publicity still from "Limelight."
1952: The maiden flight of the B-52 Stratofortress takes place. The long-range, subsonic, jet-powered strategic bomber was built to carry nuclear weapons for Cold War-era deterrence missions, but has dropped only conventional munitions in combat.
1947: Jackie Robinson starts at first base for the Brooklyn Dodgers at Ebbets Field, breaking baseball's color line. Although he failed to get a base hit, he walked and scored a run in the Dodgers' 5-3 victory.
1945: The Bergen-Belsen concentration camp in northwestern Germany is liberated by the British 11th Armoured Division. The British soldiers discovered around 53,000 prisoners inside, most of them half-starved and seriously ill, and another 13,000 corpses lying around the camp unburied. Among the estimated 50,000 people who died in the camp during World War II, were Margot and Anne Frank, who died in March 1945 as part of a typhus epidemic that hit Bergen-Belsen.
1933: Country music singer and musician Roy Clark, best known as the host of the TV show "Hee Haw" from 1969 to 1992, is born in Meherrin, Virginia.
1933: Actress Elizabeth Montgomery, best known for playing the witch/housewife Samantha Stephens on the sitcom "Bewitched," is born in Los Angeles, California. She died of colorectal cancer at age 62 on May 18, 1995.
1923: Insulin becomes generally available for use by people with diabetes.
1912: The British passenger liner RMS Titanic sinks in the North Atlantic at 2:20 a.m., two hours and 40 minutes after hitting an iceberg. Only 710 of 2,227 passengers and crew on board the supposedly "unsinkable" ship survived its maiden voyage.
1900: The Exposition Universelle of 1900, a world's fair held in Paris, France, opens. Over the next six months, the fair would display, in view of more than 50 million people, many machines, inventions, and architecture that are now nearly universally known, including; escalators, the Eiffel Tower, Ferris wheels, Russian nesting dolls, Diesel engines, talking films and more.
1896: The Games of the I Olympiad, the first international Olympic games held in the modern era, come to a close in Athens, Greece. A total of 14 nations sent athletes to the games, with the winners receiving silver medals, an olive branch and a diploma. Second place finishers received a copper medal, a branch of laurel and a diploma.
1894: Soviet politician and leader Nikita Khrushchev is born in in Kalinovka, a village in what is now Russia's Kursk Oblast, near the present Ukrainian border. Khrushchev served as First Secretary of the Communist Party of the Soviet Union and Soviet premier from 1953 and 1958, respectively, until he was deposed in 1964.
1892: The General Electric Company is formed by the merger of Edison General Electric Company and Thomson-Houston Electric Company.
1865: President Abraham Lincoln dies after being shot the previous evening by actor and Confederate spy John Wilkes Booth at Ford's Theatre in Washington, D.C. The president was shot in the head at about 10:13 p.m. and spent nine hours in a coma before dying at the Petersen House, a row house across the street from the theater.
1861: President Abraham Lincoln declares a state of insurrection and calls for 75,000 volunteers to suppress the rebellion three days after the Confederate attack on Fort Sumter in South Carolina. His call for a militia resulted in an additional four southern slave states also declaring their secession and joining the Confederacy.
1843: Author Henry James, regarded as one of the key figures of 19th-century literary realism and the author of novels such as "The Portrait of a Lady," "The Turn of the Screw," "The Wings of the Dove" and "The Ambassadors," is born in New York City.
1817: Thomas Hopkins Gallaudet and Laurent Clerc found the American School for the Deaf, the first American school for deaf students, in Hartford, Connecticut.
1452: Leonardo da Vinci, widely considered to be one of the greatest painters of all time and perhaps the most diversely talented person ever to have lived, is born in Vinci, Republic of Florence. Leonardo, often described as the archetype of the "Renaissance Man," was a painter, sculptor, architect, musician, mathematician, engineer, inventor, anatomist, geologist, cartographer, botanist and writer. His most famous paintings include the "Mona Lisa" and "The Last Supper" and is also known for conceptualizing a helicopter, a tank, concentrated solar power, a calculator, and more technological ideas during his life.