Guess what? The library has movies, too. Streaming ones. No DVD player? No problem.
What you're looking for just may be a line from one of the classics, or a pull quote from one of the latest HBO documentaries.
Don't forget: there's plenty of video all over the web on your topic -- and yes, that's research, too!
Films on Demand streams almost 40,000 nonfiction film titles (and a few hundred thousand segments) touching upon the whole spectrum of contemporary topics -- including yours.
Kanopy doesn't just stream documentaries and educational content -- they also offer thoughtful, entertaining cinematic titles from every era and genre.
Like with books, many libraries offer specialized databases of films to help you build a bibliography covering a specific research area.