Answer:
1) District 2 is the main recruitment district for peacekeepers.
2) Peacekeepers are controlled by the capitol
3) Peacekeepers keep "order" in Panem just the way the capitol wants it
4) Peacekeepers punish all who rebel against the capitol
5) If the peacekeepers are able to keep rebellion to a minimum, the capitol does not have to worry about being overthrown.
Hopefully your question was referring to The Hunger Games.
If not, I apologize if this does not make any sense or is unhelpful.
