Just an FYI, the governmental agency I work for has required annual training that you take online about whistle blowers and that you cannot get fired for this type of activity. I always wondered about how much and how far a person could go, say, or do before retaliation would occur, but I've seen two Director's go down and lose their job for what certain tattle tales said they did to the likes of the Office of Inspector General (OIG). It didn't seem to me that they received a fair deal from where I sat, but who really knows when it gets down to brass tacks.
They also have required annual training about sexual harassment which everyone completes, yet there are still men who think like Neanderthals in the workplace that breeze through the training and say things to women that are so offensive and uncool that it makes me want to puke. I don't know why I brought it up other than it bothers me that they get away with it, whereas that stuff was dealt with swiftly and not tolerated in the private sector where I worked. Take it for what it's worth and your mileage will most certainly vary.