있는 사람들

people who are

→ 있다
phrase Uncommon #9,101
people who are Usually follows a verb ending in -고 있 to describe people who are doing something.
KO: 밖에서 기다리고 있는 사람들은 제 친구예요.
EN: The people waiting outside are my friends.

불안으로 떨고 있는 사람들

People trembling with anxiety

— 희생 (1986)