Would you choose to keep your job or your integrity if you had to make a choice? Why?
You can get other jobs. Once you lose your integrity it can never be replaced. Why would you hang to what there are many of and give up something priceless and irreplaceable?
For many people around the world and here (US), integrity is a luxury they cannot afford. For them survival and the people that depend on them mean more than dignity. Anybody who truly believes otherwise, should be grateful for his good life.