I was completely unaware, for example, that it was technically illegal to show a video in your classroom that you purchased or rented for viewing. Teachers do this on a regular basis, and while it seems harmless, rules are rules I suppose.
It will be important as an educator to make sure that students really understand the importance of copyright laws and how to abide by them. Extra attention will have to be applied to lessons in order to make sure that students fully understand how to cite their sources, and how to do the appropriate research to make sure the sources and materials they are using in their own works are being used in the appropriate manor. This will make certain things more time consuming certainly, but once the students get a firm understanding of how to locate licensing terms of a source and what the different licenses allow or don't allow, it will make their work legitimate and properly documented.
As trivial as this lesson first seemed to me, I understand the importance and am actually glad it was addressed. I had no idea something as simple as showing a video from home in class shouldn't be done, as I have seen it done on a regular basis. Understanding licensing and copyright terms will help me teach my future students, but also educate myself and benefit my own work.