Create room for upward movement in protest (5,3,4)
I believe the answer is:
raise the roof
'movement in protest' is the definition.
'raise the roof' can be an answer for 'protest' (raise the roof can mean to protest or make noise). I'm unsure of the 'movement in' bit.
'create room for upward' is the wordplay.
'create' becomes 'raise' (raising is a kind of creating).
'room for upward' becomes 'theroof' (I am not sure about this - if you are sure you should believe this answer much more).
'raise'+'theroof'='RAISE THE ROOF'
(Other definitions for raise the roof that I've seen before include "make merry!" , "Add another storey, perhaps causing one to get very angry" , "Expose loft" , "give a fantastic reception" , "Make a great noise" .)