Hmm, well firstly anything you do which causes a negative to someone else will come back upon you in some way. Just as when you do bead things it often comes back on you with unforseen circumstances. Now the real question is what is this person doing exactly that makes them so deserving of losing their job?
This sounds like a rather selfish act to me, and selfish acts have a way of coming back to bite us in the you know where. My advice, learn to be more sagely and not let the nonsense others spew bother you so much. Best advice you will get I think. Take care.