Violent thief (6)
I believe the answer is:
robber
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">violent thief</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for robber that I've seen before include "Highwayman, for example" , "Property stealer" , "Mugger" , "Violent thief" , "One who steals" .)