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I think a paran in tRump's natal chart is likely the impetus for the name calling he constantly indulges in. This paran in tRump's natal chart ties his Moon and Sun to Mars, the 3 of them acting in unison as can be easily seen in his day to day behavior. Mars is also the most angular planet in his chart, making this configuration already involving the lights, the most powerful aspect in the chart. It will come to chart angles once a day in a diurnal chart, at least once a month in a progressed lunar return, and once a year in a progressed solar return.
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tRump's name calling (from various sources) for some of his political opponents during the 2016 election campaign and since the 2017 inauguration as well as foreign politicians, heads of state, and some public figures. This list is not complete.

Mike Pounce (Mike Pence), Lyin' Ted (Ted Cruz), Crazy, Crooked, Heartless, Lyin' Hillary, Skank (Hillary Clinton), Da Nang Dick (Senator Dick Blumenthal), Pocahontas (Senator Elizabeth Warren), Low Energy Jeb (former governor Jeb Bush), Slimeball (Jim Comey), MS-13 Lover (Speaker Nancy Pelosi), Dumb as a Rock Mika (MSNBC's Mika Brzezinski), the Dumbest Man on Television (CNN's Don Lemon), Fat Jerry (Representative Jerry Nadler), Little Marco (Senator Marco Rubio), Dumbo (for his former Secret Service director Randolph "Tex" Alles), Crying Chuck (Senate Minority Leader Chuck Schumer), Animal Assad (Bashar al-Assad, President of Syria), Little Rocket Man (Kim Jong-un Supreme Leader of North Korea), Sloppy Steve (Steve Bannon).