Fanatic often supports extreme characters in Zimbabwe (6)
I believe the answer is:
zealot
'fanatic' is the definition.
(thesaurus)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for zealot that I've seen before include "Fanatic person, much too enthusiastic" , "Fervent, perhaps militant, proponent" , "A fanatic or extremist" , "Fanatic, obsessed person" , "Single-minded supporter of a cause" .)