Troubles in court shifted rioters at last (8)
I believe the answer is:
ructions
'troubles' is the definition.
The answer and definition can be both acts as well as being plural nouns.
Perhaps you can see a link between them that I don't see?
'in court shifted rioters at last' is the wordplay.
'shifted' indicates an anagram.
'at last' says to take the final letters.
The final letter of 'rioters' is 's'.
'in'+'court'='incourt'
'incourt' with letters rearranged gives 'ruction'.
'ruction'+'s'='RUCTIONS'
Can you help me to learn more?
(Other definitions for ructions that I've seen before include "Informally, noisy arguments and protests" , "Uproar, commotions" .)