Walk with Me - S3-E3
Character mistake: When Andrea asks the Governor his real name, a young girl in pink shirt is walking like a "walker" and abruptly shifts to normal gait.
Suggested correction: She was never walking like a "walker." She was wondering around like many of the other extras. She looks like she was waiting for her family and when the boys approach, she stops wondering around and walks towards wherever they live.
Continuity mistake: When the Governor first attacks the prison, he is standing on the driver's side but in front of the truck. Next, Michonne aims at the truck and now the black guy who was always with Martinez is shot dead on the driver's side. Then after that, you see he's alive again on the passenger side right before the other truck comes crashing through the gates with all the walkers inside.
Suggested correction: The man you're taking about is Shumpert aka "Bowman." He's was not shot dead. He dove for cover and is still alive. In fact, he's in at least a half dozen more episodes, including in season 4.