Nah dude, you're not getting it. The VIKINGS were way more awesome than everybody else!!! They were totally badass dudes with beards and horned helmets and stuff who conquered things, and are on the covers of METAL ALBUMS and they were totally cool dudes who were all tolerant and like, ahead of their time and stuff, because that's the way cool people are! Never mind that most of the conquering they did were raids of defenseless settlements that couldn't resist them that involved plenty of rape, but it's cool because we can still live out our repressed white nerd power fantasies through them... VIKINGS!!!!!
Oh and yes, the Kazars were converts to Judaism.