How does the capitol control the population of the districts from the hunger games?

The government of Panem kept the people of the districts hungry and with low resources. The districts live under draconian laws where any form of weapon is illegal to own. A general shadow of despair remains over all of them. Pamen controls The Hunger Games, enforces participation in the games through military power, and compels the entire population to watch the grisly deaths of the children sent to play. It is a sort of carrot and the stick situation: the children who go to the games know that only one of them will return, but that one lives a life of luxury, wealth, and lack of wanting when he or she returns to the district that sent them.