Journalist is working with ITV before mass protest of a modern variety (10)
I believe the answer is:
hacktivism
'protest of a modern variety' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'journalist is working with itv before mass' is the wordplay.
'journalist' becomes 'hack' (hack can informally mean a journalist).
'working with' indicates an anagram (working with the letters).
'before' is a charade indicator (letters next to each other).
'mass' becomes 'm' (symbol used in Physics e.g. f=ma).
'itv' is an anagram of 'tiv'.
'is' after 'tiv' is 'tivis'.
'hack'+'tivis'+'m'='HACKTIVISM'
Can you help me to learn more?
(Another definition for hacktivism that I've seen is " computer attack".)