NegaPanda
There's a scene from the ... 80's?... I think... with Bruce Wayne attending classes in preparation for becoming a policeman. He ends up having an argument with his professor over "Justice vs the Law", and decides that the Law often has constraints that limit Justice.
(snip)
"Untold Legends of The Batman."
Unless you're referring to a different scene.
Bruce was in college, where he majored in Criminology, and minored in Psychology.
He was in Criminology class, and the professor put forth a situation for discussion.
Two youths go out and steal a car. They joyride around.
The youth in the passenger's seat begins to have second thoughts.
Before he can tell the driver, the car hits a pedestrian, killing her.
Is the passenger guilty of felony manslaughter?
Bruce considered, and said the passenger was guilty of car theft, but not manslaughter.
The professor corrected him, saying that the law considered both criminals guilty of both crimes.
"That's the law."