While initially I wasn't going to dignify this with a response, I would to recommend you travel to Europe. There are hundreds of hours of footage from those times, ruins, survivors, ex-Nazi's gone public, anything you could want for proof of it happening.

I see how things in the video's propose the non-existence of the WWII holocaust as likely, so I understand you want to spread that knowledge. However, I ask you to educate yourself a little more first, then decide what's more likely, and tell us about it, whatever it may be.