Consumer crusader Ralph (5)
I believe the answer is:
nader
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">consumer crusader ralph</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for nader that I've seen before include "activist helping consumers" , "Ralph, US lawyer and consumerist campaigner, b. 1934" .)