Rebellion caused by one skinhead in band (6)
I believe the answer is:
rising
'rebellion' is the definition.
(synonyms)
'one skinhead in band' is the wordplay.
'one' becomes 'i' (Roman numeral).
'skinhead' becomes 's' (head letter of 'skin').
'in' means one lot of letters goes inside another.
'band' becomes 'ring' (a ring is a band of metal).
'i'+'s'='is'
'is' going within 'ring' is 'RISING'.
'caused by' acts as a link.
(Other definitions for rising that I've seen before include "Upward rebellion?" , "Sloping up; rebellion" , "Moving upwards" , "Moving upward" , "Mutiny" .)