Indiana bangs violate the law (8)
I believe the answer is:
infringe
'violate the law' is the definition.
(thesaurus)
'indiana bangs' is the wordplay.
'indiana' becomes 'IN' (abbreviation).
'bangs' becomes 'fringe' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'in'+'fringe'='INFRINGE'
Can you help me to learn more?
(Other definitions for infringe that I've seen before include "Encroach on (a right)" , "Contravene" , "Encroach, impinge" , "Break the rules" , "Cross boundary" .)