Fighters shouting, interrupting travellers (8)
I believe the answer is:
migrants
'travellers' is the definition.
(I know this)
'fighters shouting interrupting' is the wordplay.
'fighters' becomes 'migs' (I can't justify this - if you can you should believe this answer much more).
'shouting' becomes 'rant'.
'interrupting' is an insertion indicator.
'migs' placed around 'rant' is 'MIGRANTS'.
Can you help me to learn more?
(Other definitions for migrants that I've seen before include "They move from country to country" , "Smarting like people settling in strange country" , "travellers" , "They move home to other regions" .)