Rick Grimes: This is how we survive. We tell ourselves that we are the walking dead.
Carol: haven't had a chance to say, I'm glad you came back.
Daryl: To what? All this?
Carol: This is our home.
Daryl: This is a tomb.
Carol: That's what T-Dog called it, thought he was right, until you found me. He's your brother, but he's not good for you. Don't let him bring you down. After all look how far you've come.
Rick: It is pretty stupid for us to go out there, right?
Daryl: Yep... do it again tomorrow?
Rick: Yep.
Gabriel Stokes: What you're saying... doesn't make you a sinner. But it does make you a tremendous shit.
Answer: The walkers could have knocked them down more than once. There may have been another wave that knocked down the fence earlier and they're going to put it up again soon.
Captain Defenestrator