The book of names, holds the name of every known holocaust victim

I unfortunately have a family member who downplays the amount of Jewish people who died during the holocaust and believes the real number is more like 2 million. It all comes from some twisted conspiracy where he believes Jewish people rule the world behind the scenes. This infuriates me to no end and while I realize he might be too far down the conspiracy hole to really save, I would still like to show him that he is wrong. I would greatly appreciate if anyone has some kind of online resource I can use to show him to make him see how incredibly wrong he is. As someone who grew up going to Jewish community centres and being involved in the community, it absolutely breaks my heart to see how ignorant someone can be. Any help would be greatly appreciated.

/r/interestingasfuck Thread Link - reddit.com