There's a national one for these people (6)
I believe the answer is:
anthem
'there's a national' is the definition.
I can't tell whether this definition defines the answer.
'one for these people' is the wordplay.
'one' becomes 'an' (an apple is one apple).
'for' says to put letters next to each other.
'these people' becomes 'them' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'an'+'them'='ANTHEM'
Can you help me to learn more?
(Other definitions for anthem that I've seen before include "One for doomed youth" , "Hymn of loyalty" , "The man for a popular song" , "The man for a rousing song" , "Uplifting song -- the man (anag)" .)