The "New" Jacobin Democrats

Recently I have been hearing the term "Jacobin" in political discussions. That's a term that has been kicking around for at least the past two decades, but it seems to have new meaning now. So I searched YouTube and found this video where Victor Davis Hanson explains who these people are. Ironically, he uses Maine's new Democrat idol Graham Platner as the example. That's a new concept to me but Platner does fit the mold from what I have seen of him. The Jacobin shoe fits:

Victor Davis Hanson: The Fresh, New ‘Jacobin’ Faces of the Democrat Party