I would say it depends on the context. Are you in a profession with an ethical obligation and an oath to the public like a doctor, engineer, or lawyer? Then I t

I would say it depends on the context. Are you in a profession with an ethical obligation and an oath to the public like a doctor, engineer, or lawyer? Then I think you have an obligation to say something regardless of downside. Those aren't "jobs", they are "professions" because they profess an oath that should be more than mere words.