On March 31, 1968, President Lyndon B. Johnson stunned the country by announcing during a televised address that he would not seek re-election.
In 1933, President Franklin D. Roosevelt signed the Emergency Conservation Work Act, which created the Civilian Conservation Corps.
In 1993, actor Brandon Lee, 28, was accidentally shot to death during the filming of a movie in Wilmington, North Carolina, when he was hit by a bullet fragment that had become lodged inside a prop gun.
In 1995, Mexican-American singer Selena Quintanilla-Perez, 23, was shot to death in Corpus Christi, Texas, by the founder of her fan club, Yolanda Saldivar, who was convicted of murder and sentenced to life in prison.
In 2005, Terri Schiavo, 41, died at a hospice in Pinellas Park, Florida, 13 days after her feeding tube was removed in a wrenching right-to-die dispute.
Auto parts supplier Delphi Corp. unveiled a broad restructuring plan that would cut 8,500 salaried jobs and shut or sell a third of its plants worldwide.
Moammar Gadhafi struck a defiant stance after two high-profile defections from his regime, saying the Western leaders who had decimated his military with airstrikes should resign immediately — not him.
(Gadhafi's message was in the form of a scroll across the bottom of state TV as he remained out of sight.) Baseball fan Bryan Stow, a paramedic from Santa Cruz, California, suffered traumatic injuries and brain damage as he was brutally beaten following the Dodgers' home opener against the Giants in Los Angeles.
Lawyers for Boston Marathon bomber Dzhokhar Tsarnaev (joh-HAHR' tsahr-NEYE'-ehv) rested their case in his federal death penalty trial, a day after they began presenting testimony designed to show his late older brother, Tamerlan, was the mastermind of the 2013 terror attack.
