There is quite literally a source posted directly above you. Stop flaming, calm down and take in new information. This was a very well publicized story.

The apology doesn't substantially address how the symbols wound up in the email in the first place. The problem with the runes isn't their placement, it's that they are explicitly and indelibly associated with Nazis and white supremacists. Just as with the swastika, their meaning prior to the Third Reich is irrelevant: The Nazi links are too clear and prevalent to pretend that any other connection is equally meaningful.

A source was already shared hours before you decided to be a dick. Fuck off and read it.