The violent insurrection at the U.S. Capitol Building last week, incited by President Donald Trump, serves as the grimmest moment in one of the darkest chapters in the nation’s history. One such person is Bandy X. Lee, a forensic psychiatrist and president of the World Mental Health Coalition. Expert on the psychology of Donald Trump and his supporters says their behavior can be explained by a “narcissistic symbiosis” and “shared psychosis.” Tayfun Coskun Getty ImagesDo you think Trump is truly exhibiting delusional or psychotic behavior? And (3) fixing the socioeconomic conditions that give rise to poor collective mental health in the first place. And the situation with Trump supporters is very similar.