The Pinkertons were a "detective agency," read: hired mercenaries for the U.S. government protecting the ruling elite's business interest. They literally assassinated striking workers and other dissidents so that capitalist ruling class could prevail and continue to exploit the labor of the working class. Kind of in really supremely bad taste to name a TV show about detectives "The Pinkertons" and paint them as "the good guys." Really gross.
Review of The Pinkertons
