Jackie Robinson breaks color barrier

On April 15, 1947, Jackie Robinson, age 28, becomes the first African American player in Major League Baseball when he steps onto Ebbets Field in Brooklyn to compete for the Brooklyn Dodgers. Robinson broke the color barrier in a sport that had been segregated for more than 50 years. Exactly 50 years later, on April 15, 1997, Robinson’s groundbreaking career was honored and his uniform number, 42, was retired from Major League Baseball by Commissioner Bud Selig in a ceremony attended by over 50,000 fans at New York City’s Shea Stadium. Robinson’s was the first-ever number retired by all teams in the league.

Jack Roosevelt Robinson was born January 31, 1919, in Cairo, Georgia, to a family of sharecroppers. Growing up, he excelled at sports and attended the University of California at Los Angeles, where he was the first athlete to letter in four varsity sports: baseball, basketball, football and track. After financial difficulties forced Robinson to drop out of UCLA, he joined the army in 1942 and was commissioned as a second lieutenant. After protesting instances of racial discrimination during his military service, Robinson was court-martialed in 1944. Ultimately, though, he was honorably discharged.

President Lincoln dies

At 7:22 a.m., Abraham Lincoln, the 16th president of the United States, dies from a bullet wound inflicted the night before by John Wilkes Booth, an actor and Confederate sympathizer. The president’s death came only six days after Confederate General Robert E. Lee surrendered his massive army at Appomattox Court House, effectively ending the American Civil War.

Booth, who remained in the North during the war despite his Confederate sympathies, initially plotted to capture President Lincoln and take him to Richmond, the Confederate capital. However, on March 20, 1865, the day of the planned kidnapping, the president failed to appear at the spot where Booth and his six fellow conspirators lay in wait. Two weeks later, Richmond fell to Union forces. In April, with Confederate armies near collapse across the South, Booth hatched a desperate plan to save the Confederacy.

Three people killed, hundreds injured in Boston Marathon bombing

On April 15, 2013, two bombs go off near the finish line of the Boston Marathon, killing three spectators and wounding more than 260 other people in attendance. Four days later, after an intense manhunt that shut down the Boston area, police captured one of the bombing suspects, 19-year-old Dzhokhar Tsarnaev; his older brother and fellow suspect, 26-year-old Tamerlan Tsarnaev, died following a shootout with law enforcement earlier that same day.

The 117th Boston Marathon began in the morning from Hopkinton, Massachusetts, with some 23,000 participants. At around 2:49 that afternoon, with more than 5,700 runners still in the race, two pressure cooker bombs hidden in backpacks exploded within seconds of each other near the finish line along Boylston Street. Three people died: a 23-year-old woman, a 29-year-old woman and an 8-year-old boy. Among the scores of others who were injured, more than a dozen people required amputations.

Titanic sinks

At 2:20 a.m. on April 15, 1912, the British ocean liner Titanic sinks into the North Atlantic Ocean about 400 miles south of Newfoundland, Canada. The massive ship, which carried 2,200 passengers and crew, had struck an iceberg two and half hours before.