When there are a lot of people around who are not involved in the situation, they are called onlookers. This means that they are not involved in the fight, or the dispute.
The bystanders were watching the fight between the two groups.
The bystanders were watching the protesters rally.
noun
someone who looks on
Synonyms:
1
This is what inflamed the onlookers.
2
Jokes are typically for the entertainment of friends and onlookers.
3
He was eventually tackled and restrained by onlookers.
4
The onlookers joined in, clapping the rhythm or singing.
5
The spectacle inspired amazement, and awe among the onlookers.
6
The story is that an onlooker scoffed at the idea and challenged them.
7
It looks like the stuntmen are not too stressed to wave to the onlookers.
8
Onlookers for the most part said they were impressed by the spectacle.
9
Onlookers shouted as the man attempted in vain to escape the tracks.
10
An infectious sadness permeates through even the most distant onlooker's body.