Outlaw group's Italian (6)
I believe the answer is:
bandit
'outlaw' is the definition.
(I've seen this before)
'group's italian' is the wordplay.
'group' becomes 'band' (band is a kind of group).
'italian' becomes 'it'.
'band'+'it'='BANDIT'
(Other definitions for bandit that I've seen before include "Highwayman" , "Dan bit the robber badly" , "Marauder" , "Member of a robber gang" , "Desperado" .)