Europeans come in to take action against Africans (8)
I believe the answer is:
sudanese
'africans' is the definition.
(people from Sudan)
'europeans come in to take action against' is the wordplay.
'europeans' becomes 'Danes' (Danish people).
'come in' indicates putting letters inside.
'to take action against' becomes 'sue' (I've seen this before).
'danes' going inside 'sue' is 'SUDANESE'.
(Other definitions for sudanese that I've seen before include "African inhabitants" , "Africans" , "Of Khartoum, say" , "From Khartoum, perhaps" , "People in country" .)