This is the 4180th most frequent Korean word.
주민들을
"Residents" or "inhabitants."
The phrase '동네 주민들을' refers to the residents of the neighborhood as the direct object of the invitation action in this sentence.
동네 주민들을 모두 초대하여 축제를 열었습니다.
The entire neighborhood's residents were invited, and a festival was held.
The phrase '주민들을 위한' specifies that the new policy is intended for the residents, indicating the beneficiaries of the policy.
정부는 주민들을 위한 새로운 정책을 발표했습니다.
The government announced a new policy for the residents.
The phrase '참석한 주민들을' describes the residents who attended the discussion, indicating a subset of residents as the direct object of the action of being seen.