Continue to cause a commotion (5,2)
I believe the answer is:
carry on
This clue is a double definition.
'continue' is the first definition.
(carry on can mean to continue or keep going)
'cause a commotion' is the second definition.
(carry on can mean to cause a commotion)
'to' is the link.
(Other definitions for carry on that I've seen before include "Display of fussing" , "Continue like British comedy films?" , "The palaver" , "Don't give up" , "Don't stop" .)