It’s not quite Chocolate City, but recent election wins by African-American politicians has the Big Apple on the verge of being the hub of black power. Not only is the nation’s largest city poised to elect its second African-American mayor and its first African-American district attorney, New York City’s new (b)lack power surge has already made significant inroads in state government and may soon even shake up the halls of Congress. And that’s just on the surface. Behind the scenes is a slate of party bosses, city council members and energized voters ready to usher in a new day for...