Pic - Mayor Bill de Blasio, at Gracie Mansion with First Lady Chirlane McCray, activist Van Jones, and Connecticut Gov. Dannel Malloy, plans to dip his toe into presidential politics with the launch of a push for income inequality to become a central issue of the 2016 national elections. "All of this is focused on the notion that we are not having a discussion on income inequality in this country and we are not having that discussion at our peril." GRACIE MANSION — Mayor Bill de Blasio, who supporters describe as a "national hero" among progressives, has dipped his his...