Answer:
The Poeple.
Explanation: America was built from the ground up to not have a king or ruler of any sort, hints why they try to "nerf" the leader's power and give it to the people so America doesn't become like Britain. That's why our founding fathers left Britain.
She used negative motivation. She kept talking about the bad aspects of it and how it might turn out that people were motivated to stop it. It is called negative motivation and it worked because many people accepted this and started raising more questions out of fear for their safety.

The Reforms of Cleisthenes - the tribes

Athenian citizen storming the Acropolis, from The Greeks documentary
The 'democratic' reforms of Cleisthenes were a highly complicated revision of tribal and religious associations that had endured for centuries. Above all else, they were an attempt to make the different factions and regions of Athens into one people, with a popular assembly, and the necessary institutions to make that assembly work.
Link:
https://www.pbs.org/empires/thegreeks/background/10a.html