Carlos is in his history of science class. The professor shows a short clip of Mel Brooks's film Young Frankenstein. Then the class discusses this week's reading, which Carlos got by checking out the copy that was placed on reserve at the library. Didn't we just say that we couldn't legally do stuff like this?
Although the creator of a work usually must grant permission or get paid if someone wants to use or copy his or her work, there are exceptions.
The courts consider all four of the following factors when deciding whether or not something is to be considered fair use.
For more information on fair use, see the US Copyright Office explanation or watch this video.
For more information on copyright and reserves, see UCLA Library Copyright Policy.