A mentor in shamelessness: the man who taught Trump the power of publicity https://www.theguardian.com/us-news/2016/apr/20/roy-cohn-donald-trump-joseph-mccarthy-rosenberg-trial

Trump’s Mobbed Up, McCarthyite Mentor Roy Cohn http://www.thedailybeast.com/articles/2015/07/23/trump-s-mobbed-up-mccarthyite-mentor.html

What Donald Trump Learned From Joseph McCarthy’s Right-Hand Man https://www.nytimes.com/2016/06/21/us/politics/donald-trump-roy-cohn.html?_r=0

"In an interview with former NYPD detective James Rothstein, this author discovered that such operations do exist and go far back into America’s secret history. Rothstein is no conspiracy theorist. He is a legend in American law enforcement and speaks from experience. Furthermore, he gave me two notable examples from his time as a detective. Rothstein had an opportunity to have a sit-down with infamous McCarthy committee counsel Roy Cohn. During this sit-down, Cohn admitted to Rothstein that he was part of a rather elaborate sexual blackmail operation that compromised politicians with child prostitutes (Rothstein, no pagination). Cohn told Rothstein that this operation was being carried out as part of the anticommunist crusade of the time (no pagination)."