This video did not violate copyright law and it falls within the fair use law. The current law is up to 3 minutes is allowed to be used as long as the owner is credited and nothing is changed about the original work. This video used multiple clips from multiple movies which were clips of certain characters saying different words to complete a sentence explaining copyright law. In total if each movie had 3 minutes taken from each one then the video would’ve been around 80 minutes long while it was only 10 minutes long, the time limit was not even close to being reach so I strongly believe this falls within fair use. In the credits there were all the movies that they used the clips from and according to current copyright law that falls within the fair use law.