It is tempting to classify this as Psychological Projection. Projection is common in such personality disorders as Borderline, Paranoid and Narcisistic personality disorders.
While under professional ethics it is not allowed for clinical psychologists to diagnose Trump without personally examining the patient or publicly divulge the diagnosis, some qualified and brave enough to profer an opinion have publicly said that Trump has some of the characteristics of all 3 .
Having said that, something like 5% of people have personality disorders either chronic in nature or on an episodic basis and its not of itself grounds to do anything about it until they break the law.