Public brawl (4-3-3)
I believe the answer is:
free-for-all
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">public brawl</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for free-for-all that I've seen before include "Public brawl" , "Disorganised event" .)