Civil War dissenter (8)
I believe the answer is:
leveller
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">civil war dissenter</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 leveller that I've seen before include "doing a demolition job?" , "Radical dissenter during English Civil War" , "''Death the ...'' (James Shirley)" , "Egalitarian" , "'Death is the great . . . . . . . .'" .)