Landlord for publicity that is directed at resistance (10)
I believe the answer is:
proprietor
'landlord' is the definition.
(I've seen this before)
'for publicity that is directed at resistance' is the wordplay.
'for' becomes 'pro' (I've seen this before).
'publicity' becomes 'pr'.
'that is' becomes 'ie' ('i.e.' can be a synonym of 'that is').
'directed at' becomes 'to'.
'resistance' becomes 'r' (abbreviation).
'pro'+'pr'+'ie'+'to'+'r'='PROPRIETOR'
(Other definitions for proprietor that I've seen before include "Landlord" , "Business owner" .)