As a mainstreamed reverend enjoys access at City Hall, community leaders recognize change; but some still nurse grudges.Two decades ago, Rev. Al Sharpton was the ultimate civic iconoclast, speaking what he called truth to power, organizing rallies and attacking the establishment on behalf of the oppressed. Today, he’s under fire for being too mainstream. Last summer, another prominent black voice, Cornell West, attacked the National Action Network founder in a radio interview as a too-complacent “house negro” of Barack Obama’s “plantation,” failing to hold the president accountable for drone strikes or talk about “Wall Street criminality.” And as he emerges...