How do you feel about race swapping characters in movies?

Suppose you have a lineup of beloved movies many people consider classics.

Egon (middle), Benny (left), Kjell (right) and Kjells wife Valborg (between Egon and Kjell)
Egon (middle), Benny (left), Kjell (right) and Kjell's wife Valborg (between Egon and Kjell)
How do you feel about race swapping characters in movies?

Now say you take a character, who in every past portrayal has been white. And turn him black. How would you feel? And how would you feel if they did the opposite with a black character?

How do you feel about race swapping characters in movies?
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