[Modernman]

In all honesty, is there any immoral act where you think you would be within your rights to consciously interfere with another human being whose actions have nothing to do with you?

Stepping in to prevent a crime against a thrid party, such as chasing down a mugger.

[robertpaulsen]

Well of course there are many examples.

But the question was specifically for Protagoras. You'll note that he couldn't answer it.

Look up Ayn Rand's "Objectivism" in the dictionary and there's a picture of Protagoras. This guy does not believe in imposing his will on anyone not affecting him personally and directly. How could he ever understand this pharmacist?