It's mean to upset felons (7)

I believe the answer is:

inmates

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

'felons' is the definition.
The answer and definition can be both people as well as being plural nouns.
Maybe they are linked in a way I don't understand?

'it's mean to upset' is the wordplay.
'to upset' indicates an anagram.
'its'+'mean'='itsmean'
'itsmean' with letters rearranged gives 'INMATES'.

Can you help me to learn more?

(Other definitions for inmates that I've seen before include "Inhabitants" , "Prisoners" , "Ties man (anag.)" .)

I've seen this clue in The Mirror.

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.