Judgemental claims - riot broke out (10)
I believe the answer is:
moralistic
'broke out' is the definition.
Both the definition and answer are adjectives. Perhaps there's a link between them I don't understand?
'judgemental claims riot' is the wordplay.
'claims riot' can be anagrammed to 'MORALISTIC'.
Though, I'm not clear how the anagram is indicated.
Can you help me to learn more?
(Other definitions for moralistic that I've seen before include "Pronouncing on issues of right and wrong" , "Preachy" .)