Fights

When 1 person does it, it is a struggle.

When 10 people do it, it is a brawl.

When 100 people do it, it is a riot.

When 1,000 people do it, it is a conflict.

When 10,000 people do it, it is a war.

When 100,000 people do it, it is life...

(When 300 people do it, it is a movie. =P)