Some of the elements that make
Idealism: a tendency to fall in love with ungrounded and untethered visions of how things ought to be even, or especially, when the likelihood of them ever being that way is small to nil.
Superstitious moral hubris: falsely believing that they embody the ideals they fall for and that this special morality will both ensure the success of their projects and protect them from any adverse consequences of their selflessness.
Sentimentality: collapsing all sense of context and prudence and being emotionally blinded by images or instances which display unreal examples of innocence and/or victimization.
Fratricide: a painful tendency to murderously attack each other, despite the larger or longer term consequences.
This list is hardly exhaustive.
Any other suggestions?