Viva La Vida - Coldplay
"I used to rule the worldSeas would rise when I gave the wordNow in the morning I sleep aloneSweep the streets I used to own"
Talking of a ruler with immense command. Seas of people would rise at his command.
This is contrasted with the fact that he has been displaced from ruling. (It's interesting that he sleeps in the morning.) Now he is a servant, or a beggar. "sweeping the streets."
From riches to rags, from kingship to poverty.
Numb - Linkin Park
"Tired of being what you want me to beFeeling so faithless...