And by doing that, you ensure they will continue to "work with evil systems" because they will never be able to change jobs.
You are essentially advocating a fascist viewpoint: either you agree with us, or we crush you.
You just suggested that people who work on "evil" systems be "excommunicated". Exactly how do you do that in the context of a functioning legal system without the involvement of a substantial majority of the people who would have to live under a system.
To me, it sounds like your argument is that the laws of the USA dont meet your liking, even though those laws are developed as a result of a democratic process. You're arguing against your own point, which sounds like nonsensical thinking to me.
All of these words mean nothing until someone assigns them meaning. Your meaning might be different from another persons. I've already come up with my meanings of who "immoral", "bad people" are and I'm comfortable with the mechanisms for "accountability". And I vote. And my vote counts just as much as yours does.
So where does that leave us?