first season
... that the assassination of John F. Kennedy overshadowed the launch of the first season of Doctor Who?
... that the <a href="./Assassination_of_John_F._Kennedy" id="mwBGk" rel="mw:WikiLink" title="Assassination of John F. Kennedy">assassination of John F. Kennedy</a> overshadowed the launch of the <b id="mwBGo"><a href="./Doctor_Who_(season_1)" id="mwBGs" rel="mw:WikiLink" title="Doctor Who (season 1)">first season</a></b> of <i id="mwBGw"><a href="./Doctor_Who" id="mwBG0" rel="mw:WikiLink" title="Doctor Who">Doctor Who</a></i>?