Any advice on how i could connect this case study to an EPQ title?

After much debating I think ive found a topic in psychology which has geniunely interested me for some time since I heard about it.

I was thinking of doing an EPQ on either:
The stanford prison experiment
or

The Milgram_experiment which is currently under debate as to wheter the meaning of the experiment has been lost.

I'm struggling to form a question to do with a EPQ based on that?

Any ideas?

I was thinking of something like:

To what extent is the Milgram Experiment applicable to modern society's most common law enforcement:The Police and are the conclusions drawn reflective of the police in modern day?.