This is complete horseshit. Slayer are anti-war ("War Ensemble", "Flesh Storm" hell, all of "Christ Illusion"), atheist (anything off of "God Hates Us All"), and anti-establishment (they dedicated an entire album to punk songs, "Undisputed Attitude").
Aside from butchering the names of the band members, which has already been touched on, you wrongly assert that they "glorify" Nazism. I assume you are referring to the song "Angel of Death" in your post, well Wiki has this to say about the track:
Also:
You have obviously never listened to the band short of snippets from very, very skewed sources.