During his 44 years at The Washington Post, Leonard Downie Jr. investigated and led coverage of some of the most significant events of the 20th century. Downie, the Weil Family Professor of Journalism at the Walter Cronkite School, was an editor for The Post’s investigation of the Watergate scandal, which resulted in President Richard Nixon’s resignation, covered the Jonestown massacre in 1978 and, as executive editor, overseeing The Post’s coverage of President Bill Clinton’s affair with Monica Lewinsky, which ultimately led to Clinton’s impeachment.