no because they are acting you see
and acting means that you portray a figure which is defined by the script
so othello is routinely white
and macbeth is hardly ever scottish
and so in the Children of A Lesser God which involved deaf people - they didnt deafen the people they wanted, with nails beforehand
yeah and in Casualty the actors who are playing men who have been run over or girls after an abortion, are run over before the program began
( and um oh dear and the girls arent knocked up and attacked with coat hangers - too much detail)
yeah and in La Cage aux Folles - Nou-Nou who wears a dress alot in the film is a man who normally goes about in shirt and trousers
yeah and when they made the film Marie Antoinette - is that Roman Polanski? - they wanted some realism at the end. you know when they cut her head off
and they couldnt get any starlet to volunteer !
[historically - after Anne of Cleves was pensioned off, they asked Margaret of Burgundy who was ruler of Flanders if em she wanted the job. She replied
"If I had two heads I would gladly give one to the King of England!"
and demurred
well they dont make em like that now!]