How does violence cause Anarchy's downfall?

Does this question refer to one of Shelley's poems?

The mask of anarchy 

Anarchy fights with violence. He is vanquished with words.

Shelley personifies Murder, Fraud, Hypocrisy, various Destructions, and Anarchy. Anarchy leads armed forces through England, scaring the population. Soon, the “seven bloodhounds” get to England, where they massacre the innocent public. They continue to butcher the innocent as they travel through the land, eventually reaching London, where the “dwellers,” who are by this time aware of the havoc these masked tyrants are running, are “panic-stricken” and attempt to run away.

Anarchy claims to be God, King, and Law, rejecting all traditional sources of authority and power. Some choose to follow him. As his forces proceed with their destruction, even Hope cries out in despair. Finally, however, a mist of hope emerges, carrying thoughts. This revives Hope and kills Anarchy. The land of England seems to speak to the English, asking them to rise and retake true freedom, since they really have been oppressed and should fight back. Instead of trading “blood for blood” and “wrong for wrong,” the people should finally turn back to justice, wisdom, peace, and love in order to achieve liberty. They should be guided by “Science, Poetry, and Thought” and quiet virtues. The true revolution should be “measured” and use words instead of swords, drawing on the “old laws of England” instead of the new laws of the oppressors. When the tyrants fight back, the people should let their anger show itself until the tyrants fall back in shame. The people will then “Rise like Lions after slumber / In unvanquishable number” to reform England.