They’re not nuts about Trump.

Some 125 psychologists and other mental health professionals marched along lower Broadway Saturday to demand that President Trump be thrown out of office, based on a constitutional clause allowing presidents to be ousted when their cabinets decide they are ” unable to discharge the powers and duties” of their job.

“We can sense the power of Trump’s underlying fear that he is worthless and weak by how intensely he resists and retaliated against any criticism,” said Harry Segal, a Cornell University psychologist.

“No matter how minor, he can’t let anything go.”

Michelle Golland, also a clinical psychologist, agreed.

“We’re actually suffering from his narcissistic personality,” she said. “He has no empathy. You can feel it, the way he spoke about the San Juan mayor… She has PTSD and our president mistreats her. She is re-victimized. That is a narcissist.”

The marchers, dressed in black and wearing red plastic strips around their necks reading “Danger,’’ were led by psychologist Peter Fraenkel of City College, who carried a drum and beat out a funereal rhythm.

The psychologists and their political action committee, “Duty to Warn,’’ cites the 25th amendment which lays out the rules for removing a president from office.