Restraint for revolting reds arrested by police (8)
I believe the answer is:
headrest
'restraint' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe there's a link between them I don't understand?
'revolting reds arrested by police' is the wordplay.
'revolting' indicates an anagram.
'arrested' indicates putting letters inside (arrest can mean to hold or imprison).
'by police' becomes 'heat' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'reds' anagrammed gives 'dres'.
'dres' inserted into 'heat' is 'HEADREST'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for headrest that I've seen before include "Support on car seat" , "With capital support" , "Chair back support" , "Support of top of chair" , "feature in car?" .)