They ain't white! Not any more. They are Comanches!
7 seconds sound clip from the The Searchers (1956) movie soundboard.
You can hear this line at 01:15:01 in the Blu-ray version of the movie.
Quote context
[...]
- Will you stand up? Stand up, please.
- Debbie?
- It's hard to believe they're white.
- They ain't white! Not any more. They are Comanches!
- Maybe you can help us identify them.
- There's the white girl there.
[...]