I led a riot badly, as leader (9)
I believe the answer is:
editorial
'leader' is the definition.
(I've seen this before)
'i led a riot badly' is the wordplay.
'badly' indicates an anagram.
'i'+'led'+'a'+'riot'='iledariot'
'iledariot' with letters rearranged gives 'EDITORIAL'.
'as' is the link.
(Other definitions for editorial that I've seen before include "leader, perhaps" , "Statement of a newspaper's opinion" , "Leading article" , "Newspaper article - "I led a riot" (anag)" , "Newspaper item" .)