Is watching pirated movies for "educational purposes" also Fair Use? If not , what is the rational argument?
The exact lines are a bit blurry and subjective, but this is a decent overview: https://www.lib.uchicago.edu/copyrightinfo/fairuse.html
If you're charging people to watch in a movie theater, you can't pretend that's educational. But if you want to show a video in a classroom that's relevant to the coursework, it's absolutely covered under fair use.