Jittery characters in RTÉ hate drama (7)

I believe the answer is:

theatre

I'm a little stuck... Click here to teach me more about this clue!

'drama' is the definition.
(theatre can mean the world of drama)

'jittery characters in rte hate' is the wordplay.
'rte hate' can be anagrammed to 'THEATRE'.
However, I am not clear how this is indicated.

Can you help me to learn more?

(Other definitions for theatre that I've seen before include "Scene of military activity" , "Scene of action" , "Globe, say" , "Place for spectacles" , "US cinema" .)

I've seen this clue in The Irish Times.

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