Physicians supporting revolutionary movement as propagandists (4,7)

'propagandists' is the definition.
The answer and definition can be both people as well as being plural nouns.
Maybe you can see an association between them that I can't see?

'physicians supporting revolutionary movement' is the wordplay.
'physicians' becomes 'doctors' ('doctor' can be a synonym of 'physician').
'supporting' says to put letters next to each other (in a down clue, some letters go below others).
'revolutionary movement' becomes 'spin' (spin is a kind of movement. I am not sure about the 'revolutionary' bit.).
'doctors' after 'spin' is 'SPIN DOCTORS'.

'as' is the link.

Can you help me to learn more?