I hope people here recognize that DJT has a high level of psychopathy.
He doesn't care about others who he insults, suffers harm, or are harmed by others who follow his lead. It is not his decision to not care but rather an inability to care. Narcissistic psychopaths often attempt to mimic a caring person but are clumsy in their attempt to control others and blame the victims. There is a need to harm others for extreme social psychopaths, preferably with impunity, but often with disregard for punishment. They usually claim they are the victims of other people's plans and have shallow affect when confronted, while displaying superficial charm.

Perhaps you have heard them say "you have no idea who you are dealing with" or "look what you made me do", "I'm getting upset, you better fix this".

Recognizing psychopaths could save your life or save you time money or manipulation.