Harm that an external observer would conclude was reasonably foreseeable

Excellent. From Concepts and implications of altruism bias and pathological altruism by Barbara A. Oakley.

Pathological altruism can be conceived as behavior in which attempts to promote the welfare of another, or others, results instead in harm that an external observer would conclude was reasonably foreseeable.

Saying what has needed to said for a long time. Too often good intentions and noble goals are used as the final trump in any argument to do with the commonweal. Don't examine the hidden assumptions or the past performance so long as the goals are right and the intentions are good. That's not how we build bridges, it's not how we ought to develop public policy or corporate strategies. This paper is a mere eight pages, but is clear, to the point and quotable at length. Read the whole thing.

Well-meaning but unscientific approaches toward altruistic helping can have the unwitting effect of ensuring that the benefits of science and the scientific method are kept away from those most in need of help. In the final analysis, it is clear that when altruistic efforts in science are presented as being beyond reproach, it becomes all too easy to silence rational criticism (62, 70, 72–78). Few wish to run the gauntlet of criticizing poorly conducted, highly subjective “science” which is purported to help, or indeed, of daring to question the basis of problematic scientific paradigms that arise in part from good intentions.

Examples referenced include government promotion of home ownership and foreign aid but the list of altruistically intended but objectively destructive programs could probably on its own take up the entire eight pages from Affirmative Action to Zero Tolerance.