The Devils Rejects, a sequel to: House of 1000 Corpses, Films by Rob Zombie.
The Devils Rejects continues the story of the Firefly family, starting off with scenes of them all sleeping peacefully, and then the police surrounding the house, taking aim. The bullets start flying as poilce and the firefly family standoff, the gas canisters fly in, and one of the family goes down, shotgun blast to the chest, through home made steel plate armour. So the family escapes through the basment, Baby and Otis make it out alive, and begin the trek to a safe location to call in reinforcements.
The Devils Rejects, like house of 1000 corpses is a very dark movie, but this one has a very very good ending, I will never listen to freebird the same way again.