John Hinckley Jr. is escorted by police in Washington, D.C., following his arrest after shooting and seriously wounding president Ronald Reagan on March 30, 1981. AFP/Getty Images hide caption

toggle caption AFP/Getty Images

The death this week of James Brady, the Reagan administration press secretary who was wounded during a 1981 assassination attempt, has been ruled a homicide, according to District of Columbia police. He's seen here with President Clinton in 1993. Paul J. Richards/AFP/Getty Images hide caption

toggle caption Paul J. Richards/AFP/Getty Images