What is the meaning of Madame Defarge's parting words to the mender of roads when she uses the metaphor of the dolls and birds?

Dolls and birds..... set upon and plucked..... this is a metaphor for the taking down of the aristocrats by the revolutionaries.

"were shown a flock of birds, unable to fly, and were set upon them to strip them of their feather for your own advantage, you would set upon the finest feathers; would you not?"