I ended up leaving due to a brilliant jerk. The organization believed his output outweighed the misery he created. It did not matter that 3 people out of 10 went to HR to complain. No one sued. Yet. Unfortunately I feel it's just a fact of life in some organizations. As long as someone makes the company money the owners/management will look the other way. If you can't get rid of them, my advice is to find a place where they are not welcome in the first place.