If you make music using any samples, this is a documentary you should check out. It’s called Copyright Criminals, directed by Benjamin Franzen. It goes over samples music, the history, where it stand now and the life of some of the people who were affected by sampling.
It’s a very interesting documentary, whether or not you agree that sampling should be possible or not. I found it on Netflix streaming but it’s also available for sale and viable on Youtube as of now.