Somehow trace online prejudice (11)
I believe the answer is:
intolerance
'prejudice' is the definition.
(thesaurus)
'somehow trace online' is the wordplay.
'somehow' is an anagram indicator.
'trace'+'online'='traceonline'
'traceonline' anagrammed gives 'INTOLERANCE'.
(Other definitions for intolerance that I've seen before include "Inability to endure (something)" , "Lack of acceptance of others' views" , "Unreasonable refusal to accept" , "Unwillingness to respect the views of others" , "antipathy to different views" .)