Go berserk and scream (4)
I believe the answer is:
riot
I believe this clue is a double definition.
'go berserk' is the first definition.
(thesaurus)
'scream' is the second definition.
(synonyms)
'and' acts as a link.
(Other definitions for riot that I've seen before include "Violent disturbance by mob" , "Crowd violence" , "Disturbance by unruly mob" , "Civil disorder" , "Public act of violence by an unruly mob" .)