Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great video that you must have

I have always been fascinated with the histories from ww2, this video has made it even more fascinating. A great narrator takes us through the history of Germany during the war, and shows us the great buildings from that era. This, I feel, is a must have video for everybody that is interested in the history from ww2. My only question regarding this video is, why hasn't this video been shown on discovery, nat. geo, or any other history channel?