The Mob prohibited by the censor on the radio (4)
I believe the answer is:
band
'the mob' is the definition.
(thesaurus)
'by the censor on the radio' is the wordplay.
'by' says to put letters next to each other.
'the censor' becomes 'ban' (I've seen this before).
'on the radio' becomes 'd' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'ban' next to 'd' is 'BAND'.
'prohibited' is the link.
This may not be correct. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for band that I've seen before include "Players" , "Zone; group" , "See 23" , "troop" , "Body" .)