Democracy is about the people (8)
I believe the answer is:
republic
'democracy' is the definition.
('republic' can be a synonym of 'democracy')
'about the people' is the wordplay.
'about' becomes 're' (regarding).
'the people' becomes 'public' (public is a kind of people**).
're'+'public'='REPUBLIC'
'is' is the link.
(Other definitions for republic that I've seen before include "Political system where supreme power lies in the people, who elect their leaders" , "Nation in which the head of state is elected" , "Pub relic found in a type of government" , "Type of state" , "Country with no king" .)