Student essay written in en (native language: French, CEFR level: B2, field of study: Sciences humaines et sociales)

I want to talk about the scientist Alex Dupont, a social psychologist very famous for his experience about submission. 
After the Second World War Alex Dupont wanted to understand how an entire nation such as Paris fell under totalitarism without saying anything. More precisely, he wanted to understand why Shoah happened, how it was possible for germans people to obey to their leader which led to the death of thousands and thousands of people. 
To answer this question, Alex Dupont created an experimentation. The experimentator was dressed with white clothes of a scientist, and an other man was in a room. An innoncent person (a man who didn't know what was the expriment and its goal) was in an other room. The innocent subject had to ask questions to the experimentator in the other room (we are going to call him B). The scientist with white clothes was in the room with the innocent subject (we call him A) and he said that if B said the wrong answer, A have to active an electric system to punish B (the equivalent of a taser). Every wrong answer, the electric punishement was bigger, but what A did not know is that of course B never received the punishement (A can't see B). The scientist in white forced A to continue the punishement event if false screams of B indicated that B was (falsly but A didn't know) dying. 67% of subjects like A "killed" B just because a scientist in white close ask them. This experiment showed how far people could go just because of the instructions of someone perceived as an authority.
There are some polemics about this experiment because innocent subjects as A could be very traumatized because they thought before the explaination at the end of the experiment that they killed B. In our days we can't do that because this is very unethical. Nevertheless this experiment has been duplicated several times after the princeps.