As we have noted in the past, Trump thinks like a Mafioso.  So to understand Trump, watch this interview with Anthony Casso, who eventually became boss of the Lucchese crime family in NYC, and was notorious (a "homocidal maniac") even by Mafia standards. See especially Mr. Casso's comments on the families of his victims around 9:45 and 12:30:

Recall Trump:  "I love to remember my enemies and I love to get my enemies whenever I can, absolutely. … So many people that were enemies of mine were wiped out, and I do not really care about that."