No Sanctuary - S5-E1
Character mistake: When Gareth is questioning Rick about what was in the bag he hid in the woods, Rick replies a .44. Rick is referring to his Python, which is a .38 or .357, not a .44.
The Walking Dead (2010)
1 character mistake in season 5
Starring: Jon Bernthal, Sarah Wayne Callies, Steven Yeun, Andrew Lincoln
Genres: Horror
Continuity mistake: When Daryl is driving the hospital van, it shows that he is going to land upside down, on the vehicle's roof, when he drives off the parking garage. In the next scene, the vehicle lands on its wheels, as if it has done a complete front flip. (00:30:00)
Trivia: Eugene is looking for his missing girlfriend, "Stephanie." Princess visits him. He shows her his pinboard with strings attaching clues. He's found out plumber Roman Calhoun, was the last person to see her and tracks him down to a dodgy outfit at "1634 Racine." This is the home address in "The Untouchables" (1987 film about the capture and imprisonment of Al Capone, starring Kevin Costner & Andy Garcia), of Jimmy the good Irish cop, played by Sean Connery. (00:16:44)
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