Walking Tall (1973)

Revealing mistake: When the bad sheriff tries to run Buford Pusser over, he drives off the road and the car explodes for no reason. It's in the air when it explodes, there's no way it could have exploded without hitting the ground.

Factual error: Buford drives into his yard on Christmas morning and there are green leaves on the trees. Not in Tennessee, in winter!

Continuity mistake: In the final scenes where Sheriff Pusser drives a police car to the Lucky Spot, just before he arrives, in the long shot of him driving down the highway, the patrol car has red lights on it's roof. When he arrives and drives the car through the bar, the car has blue lights.

Judge R.W. Clarke: Why you self appointed dictator... All you know is force and violence... You don't understand the simplest things about the law.
Buford: I understand the difference between a poor honest judge and a rich dishonest one.

Thurman: Hey, Buford - How'd ya like a nice plush job as my deputy? No presence required, just brute animal force.
Buford: I ain't that desperate.

Buford: That fight yesterday was for real... Obra could have been killed, and all you do is levy a 10 dollar fine.
Judge R.W. Clarke: My prerogative... You run the streets, I run the courts.
Buford: I bring em in and you let em go. It all becomes a big joke, and I don't care to trade lives for laughs... From now on I want maximum penalties.