Executive Communication Obama marks 50th anniversary of King’s ‘dream’ speech Commemorating one of the 20th century’s greatest addresses, a black president embodies the change the civil rights leader called for. How do speechwriters prepare for such occasions? By Russell Working@byworkingAug. 29, 2013 SHARE To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.