Rabble-rousing second issue (8)
I believe the answer is:
sedition
'rabble-rousing' is the definition.
(I've seen this before)
'second issue' is the wordplay.
'second' becomes 's' (common abbreviation).
'issue' becomes 'edition' (edition is a kind of issue).
's'+'edition'='SEDITION'
(Other definitions for sedition that I've seen before include "revolt" , "Action inciting rebellion" , "Offence against state" , "Incitement to disorder" , "Subversive activity" .)