Our people back film (7)

I believe the answer is:

western

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'film' is the definition.
(I know that Western is a type of film)

'our people back' is the wordplay.
'our people' becomes 'we' (I am not sure about this - if you are sure you should believe this answer much more).
'back' becomes 'stern' (stern means the back of a boat).
'we'+'stern'='WESTERN'

Can you help me to learn more?

(Other definitions for western that I've seen before include "American film" , "Cowboy film of occidental origin" , "Old film genre, horse opera" , "direction?" , "Spaghetti film?" .)

I've seen this clue in The Independent.

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