I'm curious why you think an ethics course would actually change minds. In my experience in undergrad, we had a CS ethics course, and it went in in-one-ear-and-out-the-other for 99% of students, probably myself included. I know it was a thorough course but I promptly forgot all of it, and so did everyone else.

Ethical stance is not something you can teach in one course. If you don't have this disposition by the time you're in college, I think you're likely not learning it.