Campaigner from South Africa in simpler setting (8)
I believe the answer is:
crusader
'campaigner' is the definition.
(eg someone on a moral crusade)
'south africa in simpler setting' is the wordplay.
'south africa' becomes 'SA' (abbreviation).
'in' means one lot of letters goes inside another.
'simpler setting' becomes 'cruder' (I am not sure about this - if you are sure you should believe this answer much more).
'sa' put into 'cruder' is 'CRUSADER'.
'from' is the link.
Can you help me to learn more?
(Other definitions for crusader that I've seen before include "RA cursed (anag) - one fighting for a cause" , "Medieval fighter for the Holy Land" , "Campaigner -- rude scar (anag)" , "Campaigner for a cause, like Richard the Lionheart" , "Advocate for a cause - rude scar (anag)" .)