Using 'Boycott' in class--suggestions?

I use movies as an adjunct to English class in a remote part of India. I like to show movies from different parts of the world or where students will also learn something about history or cultures, so I bought this movie sight unseen. I'm sure it's a great movie, but for my students it was much too slow moving and they started to lose interest. I was disappointed about that since I find this episode in history so exciting, but that's how it went in my class.

If you use "Boycott" in an ESL class, be sure to give the background to the history beforehand. Don't worry about the accents -- they are clear, and the dialog is clear and slow enough, but a lot of background knowledge s required.

I'd like to hear from others about how they have used "Boycott" in class, or suggestions about what works well.