Answer points about origin of extremely discriminatory people (7)

I believe the answer is:

ageists

I'm a little stuck... Click here to teach me more about this clue!

'discriminatory people' is the definition.
The definition suggests a plural noun which matches the answer.

'answer points about origin of extremely' is the wordplay.
'answer' becomes 'a' (abbreviation eg in Q and A).
'points' becomes 'gists' (I can't explain this - if you can you should give a lot more credence to this answer).
'about' indicates putting letters inside.
'origin of' says to take the initial letters.
The initial letter of 'extremely' is 'e'.
'gists' going around 'e' is 'geists'.
'a'+'geists'='AGEISTS'

Can you help me to learn more?

I've seen this clue in The Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.