Note fake news for all to see in context (6)
I believe the answer is:
milieu
'context' is the definition.
(thesaurus)
'note fake news for all to see' is the wordplay.
'note' becomes 'mi' (as in 'do re mi').
'fake news' becomes 'lie'.
'for all to see' becomes 'u' (universal dvd certificate).
'mi'+'lie'+'u'='MILIEU'
'in' is the link.
(Other definitions for milieu that I've seen before include "'Surroundings, setting (6)'" , "Surroundings - location" , "Environmental condition, surrounding" , "Social environment or set of surroundings" , "(Social) setting" .)