Season 3: Episode 40: To Live and Die in Dixie
When Chris sees a convenience store hold up and identifies the thief in a police line-up, the Griffins are put into the witness protection program and must relocate to a small town in the deep south. While they are there, the townspeople put on a Civil War re-enactment and re-invent history by having the South win -- with laser swords. But when Peter questions the historical truthfulness, the town turns on him and he must fight his own battle against Southerners. In the end, Peter realizes it's not where your from but your religion that matters.