He has an epiphany about General Zaroff’s attitudes towards humans and what it feels like to be rich.
Maybe a dark alley or the woods maybe even an old house.
The intended audience is the American people.
This shows how much Claudius cares about being King and holding onto his throne.
He knows that the public loves Hamlet, which is why he can't just arrest him for the murder of Polonius, he has to be much sneakier and trickier than that, otherwise the public will take Hamlet's side and Claudius will lose support.