The books The Color Purple and The Autobiography of Malcolm X should be available in many public libraries. The links take you to WorldCat, which is a combined catalog of thousands of libraries. Enter your location information to find libraries near you that hold those books.
Other options include used book stores and online book retailers.
The Walden Library does not have a collection of theatrical films.
There are several places you can go to access movies:
You can also try to locate versions that have been posted online. These versions may or may not comply with U.S. copyright law. To locate a movie, it's best to search Google or Yahoo for the movie title and the word "streaming."