Your responsibility to humanity (particularly as an officer of the law) trumps your right to be fed.
Also, the world at large has upheld, many times over, that "following orders" is not a sufficient defense.
"But I have a mortgage" - the new and improved Nuremberg Defense (with apologies to Thank You For Smoking). Hell, the people who relied on the Nuremberg defense would've been shot for violating said orders. Being fired is peanuts in comparison.