Copyright owners can use a system called Content ID to easily identify and manage their content on YouTube. Want to learn more about how Content ID works? Check out this video →https://goo.gl/ELq62K
Yeah, about that..."fair use" is not a street defense, but a court room defense that a judge/jury decide on a CASE-BY-CASE basis. You do not get to claim Fair Use and suddenly cannot be targeted for Copyright claims and YouTube likely isn't willing to argue it for you either.