How we cite our quotes:
"We had to save you because you're the mockingjay, Katniss," says Plutarch. "While you live, the revolution lives."
The bird, the pin, the song, the berries, the watch, the cracker, the dress that burst into flames. I am the mockingjay. The one that survived despite the Capitol's plans. The symbol of the rebellion. (27.41-42)
Katniss is the embodiment of the revolution, which needs her in order to "live." Even though she doesn't strategize with them or even realize what the revolutionaries are capable of, she's more valuable to their movement than anyone else. She provides the focal point around which the rebels can gather and grow stronger.