Spiritually? In a spiritual context, I think it represents someone succumbing to the temptation to try to win arguments by saying nasty things about the other side, without any regard for whether or not they are true.
Ms. Ocasio-Cortez is not, in fact, PROMISING anything. She is PROPOSING changes to the laws, which is part of her job as a member of Congress.
The particular proposals that have led Mr. Stein to this overheated rhetorical frippery are proposals to restore the country's economy to a state that would be better for more of its people, by returning the tax system to the degrees of fairness it had around the time of the Eisenhower administration. A comparison to Eisenhower would be more accurate. And he hasn't generally been accused of mass murder or genocide.