(Felicia Sonmez/The Washington Post)

Some of their chants:

“Not Gaddafi, not his son, all of Libya is one.”

“One, two, three, Libya is free.”

“Hip hip hooray. Gaddafi’s gone today.”

There are little kids, and adults waving and draped in Libyan and American flags.

A young woman is holding a colorful handmade banner that reads, “Finally.”

Gaddafi’s rule crumbling as rebels enter Tripoli

PHOTOS: Conflict and chaos in Libya

VIDEO: Celebrations in Libya as rebels advance in Tripoli

VIDEO: Libya government spokesperson on rebel advancement into Tripoli

VIDEO: Libyan rebels capture key city of Zawiyah