No, don’t start helping people (6)
I believe the answer is:
nation
'people' is the definition.
'no don't start helping' is the wordplay.
'no' becomes 'n' (common abbreviation y/n).
'don't start' means to remove the first letter.
'helping' becomes 'ration' (a ration is a serving or helping).
'ration' with its first letter removed is 'ation'.
'n'+'ation'='NATION'
(Other definitions for nation that I've seen before include "Large community in one place under one government" , "Race" , "People of a state" , "Turkey?" , "Body of people under a single government" .)