NEW YORK — Reaction poured in Tuesday from heads of state, civil-rights leaders and the entertainment world following the death of Harry Belafonte at age 96. We Have To Celebrate Our Elders While They Are With Us.” — Spike Lee, who directed Belafonte’s final film, 2018’s BlacKkKlansman.” ___ “Another ‘GREAT TREE’ has fallen: Harry Belafonte, a Trailblazer and Hero to …