Trump's best friend when he was starting out was Roy Cohn. Cohn had a reputation as the most vicious lawyer in New York. Cohn got his start as Sen. Joe McCarthy's attack dog, and he never put down the knife. Cohn was the one who taught Trump that it was cheaper to stiff a small business and drag thme through the courts instead of paying what you owed.
When Cohn was diagnosed with AIDS, and uncloseted as a gay man Donald dropped him completely.

