They've done this. It's called the Milgram Experiment and the results were just the opposite.
http://www.new-life.net/milgram.htm
In response to a newspaper ad offering $4.50 for one hour's work, an individual was asked to take part in a Psychology experiment investigating memory and learning. He was introduced to a stern looking experimenter in a white coat and a rather pleasant and friendly co-subject. The experimenter explained that the experiment will look into the role of punishment in learning, and that one will be the "teacher" and one will be the "learner" (or "student"). Lots were drawn to determine roles, and it was decided that the individual who answered the ad will become the "teacher."
The "learner" (student) was then taken to a room where he was strapped in a chair to prevent movement and an electrode was placed on his arm. Next, the "teacher" was taken to an adjoining room which contains a generator. The "teacher" was instructed to read a list of two word pairs and ask the "learner" to read them back. If the "learner" got the answer correct, then they moved on to the next word. If the answer was incorrect, the "teacher" was supposed to shock the "learner" starting at 15 volts.
The generator has 30 switches in 15 volt increments, each was labeled with a voltage ranging from 15 up to 450 volts. Each switch also has a rating, ranging from "slight shock" to "danger: severe shock". The final two switches were labeled "XXX". The "teacher" was supposed to increase the shock each time the "learner" missed a word in the list. Although the "teacher" thought that he/she was administering shocks to the "learner", the "learner" was actually an actor who never experienced the shocks. (The drawing of lots was rigged, so that the actor would always end up as the "learner.")
After a number of voltage level increases, the actor started to bang on the wall that separated him from the subject. After several times banging on the wall and complaining about a heart condition, all responses by the "learner" ceased. At times, the worried "teacher" questioned the "experimenter," asking who was responsible for any harmful effects resulting from shocking the learner at such a high level. Upon receiving the answer that the "experimenter" assumed full responsibility, the "teacher" seemed to accept the response and continue shocking, even though some were obviously extremely uncomfortable in doing so.
Results
Today the field of psychology would deem this study highly unethical but, it revealed some extremely important findings. The theory that only the most severe monsters on the sadistic fringe of society would inflict cruelty is disproven. Findings showed that, "two-thirds of this study's participants fall into the category of "obedient" subjects, and that they represent ordinary people drawn from the working, managerial, and professional classes (Obedience to Authority: An Experimental View)." Ultimately 65% of all of the "teachers" punished the "learners" to the maximum 450 volts. No subject stopped before reaching 300 volts!
Milgram wrote about his findings in his 1974 book, Obedience to Authority: An Experimental View:
The legal and philosophic aspects of obedience are of enormous importance, but they say very little about how most people behave in concrete situations. I set up a simple experiment at Yale University to test how much pain an ordinary citizen would inflict on another person simply because he was ordered to by an experimental scientist. Stark authority was pitted against the subjects' [participants'] strongest moral imperatives against hurting others, and, with the subjects' [participants'] ears ringing with the screams of the victims. Authority won more often than not. The extreme willingness of adults to go to almost any lengths on the command of an authority constitutes the chief finding of the study and the fact most urgently demanding explanation.
Ordinary people, simply doing their jobs, and without any particular hostility on their part, can become agents in a terrible destructive process. Moreover, even when the destructive effects of their work become patently clear, and they are asked to carry out actions incompatible with fundamental standards of morality, relatively few people have the resources needed to resist authority.