Contrives or tries to turn out troublemakers (7)
I believe the answer is:
rioters
'troublemakers' is the definition.
(I know this)
'contrives or tries' is the wordplay.
'contrives' indicates anagramming the letters.
'or'+'tries'='ortries'
'ortries' with letters rearranged gives 'RIOTERS'.
'to turn out' acts as a link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for rioters that I've seen before include "Demonstrators" , "Violent troublemakers" , "Crowd disturbing the peace" , "They disturb the peace" , "Violent protesters" .)