David Simon has one thing in common with the 45th president of the United States, whom he has criticized on social media and in public: He understands the power of television, Twitter and other electronic media to instantly disseminate ideas in ways the printed word never could. Simon, 57, is the creator of HBO’s genre-defying/defining series “The Wire,” whose achingly realistic marks can still be seen on nearly every police procedural or crime drama of worth since its finale in 2008.