Celebrity opposed to evil leader to go on hunger strike (6)
I believe the answer is:
starve
'hunger strike' is the definition.
'starve' can be an answer for 'hunger' (synonyms). I'm not certain of the 'strike' bit.
'celebrity opposed to evil leader to go' is the wordplay.
'celebrity' becomes 'star' (a star is a celebrity or famous person).
'opposed' becomes 'v' (abbreviation for versus).
'to' is a charade indicator (letters next to each other) (I've seen this in other clues).
'leader' says to take the initial letters.
'to go' indicates an anagram (I've seen 'went' mean this ('go' can mean move)).
The first letter of 'evil' is 'e'.
'v' after 'e' is 'ev'.
'ev' anagrammed gives 've'.
'star'+'ve'='STARVE'
'on' is the link.
Can you help me to learn more?
(Other definitions for starve that I've seen before include "Fail to take in" , "Deprive of food" , "Vaster (anag)" , "Die of hunger" , "Averts (anag)" .)