The world is a big prison, and the prison never comes from the physical dimension, but the boundary of the mind.
We only see how the "police" played in the movie behaves. In fact, is the real police a role-play? No one is born a "policeman" and no one is born a "criminal". Both "police" and "criminal" are the status currently assigned to you by the institutions and laws of your existing country. Therefore, whether it is a "police" or a "criminal", their core is people, and the rest are just identities given by others.
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