In the original airing, there is blood on the sword when Pete first enters the campfire scene. The blood had been digitally removed in later releases/reruns.
Aaron finds an Alaska license plate for his collection bolted to a transport trailer. The plate format wrong. It's for a standard passenger vehicle like a car AAA 000. The correct trailer format would read 0000 AA.
When Rick shoots Pete at the end of Conquer, after he shoots you can hear an audible shell hit the ground and *ping* once it hits the ground. With a revolver (that Rick uses) there is no shells being ejected.As Rick doesn't have his original revolver but one of the semi-auto pistols that was stolen from the armory the sound of a casing ejecting and then hitting the floor is in fact correct.
After Rick wakes up from nap and Carol comes into the room, she opens the door and whole room lights up with sun light. But when she leaves and closes the door, nothing changes and room stays full of sunlight.
When Daryl and Aaron are in the car surrounded by walkers pounding on it trying to get to them, it's very obvious that the driver's side door is unlocked. Even if the walkers retain no memory of how to open doors (and it's previously been shown that some do), it would be very easy for one to accidentally get their hand caught in the door handle and open it. Anyone who has survived this long would have immediately locked the doors once inside the car.
Daryl's new bike is clearly an in-line 4, but the sound matched to it is that of a Harley-Davidson V-twin.
There was never any actual evidence of Carol and Jessie's claims that Pete was physically abusing his family. On the contrary. Scenes (before and after the events here) not only create reasonable doubt, but outright contradict their words.