Sentence:  An early operator in the field, Ivy Lee, is reported to have changed the image of John D. Rockefeller from <WSD>robber baron</WSD> to philanthropic old gentleman who loved to play golf and hand out shiny coins to children. 
Meaning of the word marked with <WSD> tags:  Especially in the 19th and early 20th centuries, a business tycoon who had great wealth and influence but whose methods were morally questionable and often unethical.