Are not bothered about small crime (7)
I believe the answer is:
treason
'crime' is the definition.
(treason is a kind of crime)
'are not bothered about small' is the wordplay.
'bothered' indicates anagramming the letters.
'about' is an insertion indicator.
'small' becomes 's' (abbreviation - e.g. clothes size).
'are'+'not'='arenot'
'arenot' is an anagram of 'treaon'.
'treaon' going around 's' is 'TREASON'.
(Other definitions for treason that I've seen before include "Act of betrayal of a government" , "Crime agains one's country" , "Disloyalty (to one's country)" , "attempting to overthrow the king" , "Betraying one's country" .)