Person objecting strongly while badger consumes rubbish (9)
I believe the answer is:
protester
'person' is the definition.
(protester is a kind of person)
'badger consumes rubbish' is the wordplay.
'badger' becomes 'pester' (both can mean to harass).
'consumes' indicates putting letters inside.
'rubbish' becomes 'rot' (both can mean nonsense).
'pester' going around 'rot' is 'PROTESTER'.
'objecting strongly while' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for protester that I've seen before include "Demonstrator" , "Person, we hear, not content" , "Dissident" , "Demonstrating kind" , "I strongly object" .)