The Gauntlet (1977)

Audio problem: After the bus crashes to a halt on the courthouse steps, the gunfire stops. A few seconds later, a bullet hole opens up on the side of the bus - but there is no sound.

Constable: Them fellers up there are gonna wonder why you bailed out. And I'm gonna tell 'em. You chose sides. Got yourself a little nookie and chose sides.

Trivia: One of the passengers seen getting off the hijacked bus is the same actor who drove the ambulance and got blown up in the rental car (blue '74 Plymouth).