Compelled to use violence in the end (8)
I believe the answer is:
enforced
'compelled' is the definition.
(enforcing is a kind of compelling)
'violence in the end' is the wordplay.
'violence' becomes 'force' (synonyms).
'in' is an insertion indicator.
'force' going within 'end' is 'ENFORCED'.
'to use' is the link.
(Other definitions for enforced that I've seen before include "Corn feed (anag)" , "Caused laws to be observed" , "Compulsory" , "'Compelled observance of, a law say (8)'" , "Taken effect" .)