Interesting, well-researched article in the New Yorker: "Who Should Stop
Unethical AI?", by Matthew Hutson, February 15, 2021:

https://www.newyorker.com/tech/annals-of-technology/who-should-stop-unethical-ai

It talks about some questionable applications of machine learning, and
how major AI conferences are changing their reviewing criteria to
require explicit consideration of the ethical implications of the
research being described.

-- Dave