When I look at this update of the icon, my favorite quote from the Grey Knights immediately comes to mind. I’m quoting it from the German voiceover, because I think the voice actor Hans Bayer captures the deep hatred of the Space Marines perfectly. Dies ist die Bestrafung durch die Rechtschaffenen, Abschaum! This is the punishment dealt by the righteous, scum!
https://youtu.be/knbZZ6qur-8?feature=shared&t=141