Relentless pursuit includes incitement (4)

I believe the answer is:

spur

'incitement' is the definition.
(spur is a kind of incitement)

'relentless pursuit includes' is the wordplay.
'includes' indicates a hidden word.
'SPUR' is hidden in the letters of 'relentless pursuit'.

(Other definitions for spur that I've seen before include "Branch - incitement" , "Strong incentive" , "branch road" , "Incite to action" , "This provokes sudden movement!" .)

I've seen this clue in The Daily Express.

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