China's police ran amok (9)
I believe the answer is:
porcelain
'china's' is the definition.
(thesaurus)
'police ran amok' is the wordplay.
'amok' indicates anagramming the letters.
'police'+'ran'='policeran'
'policeran' is an anagram of 'PORCELAIN'.
(Other definitions for porcelain that I've seen before include "Fine ceramic ware" , "Fine earthenware" , "Form of ceramic" , "Crockery" , "Fine white ceramic" .)