Copyright laws

When I say copyright laws, I'm basically just referring to the youtube video copyright laws. The reason I bring this up is because youtube has removed so many of my videos due to some copyright. I wasn't using the videos for profit or anything that would benefit me. All of my videos were posted simply to share something with the world that I thought was interesting. All these strict rules came into place when Google bought out Youtube. I think that it's not fair to have so many videos blocked. I think the fair use policy allows for the use of copyrighted material for certain things such as teaching or commentary or some other things I don't exactly remember. I think everyone liked youtube a lot better before Google bought them out. Back a few years ago before youtube was bought out, you could find almost any video that you could think of. After Google bought them out, it seems like half of the videos that were up, violated some sort of copyright law.