\'We\'ve got some difficult days ahead,\' civil rights activist Martin Luther King, Jr., told a crowd gathered at Memphis\'s Clayborn Temple on April 3, 1968. \'But it really doesn\'t matter to me now becau.... \'We\'ve got some difficult days ahead,\' civil rights activist Martin Luther King, Jr., told a crowd gathered at Memphis\'s Clayborn Temple on April 3, 1968