In A.D. 80, Rome had nearly one million people.
Many of them were unemployed and poor. During that same year, construction was completed on the Colosseum. These two facts are related.
The Roman government provided entertainment at public arenas like the Colosseum in part to distract people from the problems of city life. Among the events held at the Colosseum were
gladiator fights, in which trained warriors fought to the death.