A drumbeat of disapproval over the Washington Post’s refusal to endorse a presidential candidate took over social media Friday with numerous users posting screenshots of their canceled subscriptions to protest the publication’s decision. “I have subscribed to the Washington Post since 1993, but I just canceled my subscription today because of the paper’s abdication of duty to endorse a candidate in the most consequential election of my lifetime. Good riddance,” author and former Clinton White House aide Keith Boykin wrote on X. “The Washington Post editorial board is a disgrace,” actor Rob Rei…