I've walked out of two movies.
I quit Dead Poets Society when it played up the romance of teen suicide. I was annoyed, and resented being manipulated.
I left Slumdog Millionaire, a currently fashionable movie, for two reasons. For one, my stomach hurt. I suppose that's a side-effect of not watching modern television. I don't have the stomach for the torture and mutilation of children.
For another, my exploitation alarm was ringing. I gather the movie becomes terrifically uplifting, but uplift is a relative thing. The director had set the stage very low when I gave up.
I now have sympathy for those Indians who are offended and irritated by the film.
Update: I'm not the only one.