We've also got a shiny new rule:
Nobody talk about the fucking Nazis!
It never turns out well, and honestly it's starting to get annoying.
It's unoriginal as fuck too. Doesn't matter the context, if it involves men in brown shirts and a man with a funny little tash, it's been done already and someone got banned for it, starting with Hitler himself and continued to this day in pretty much every internet forum ever.
You're not the first bloke to think the Imperium (or the Tau, or Chaos, or any other freaking army in the game) have some common themes with the Third Reich, you're not the first to think it's cute and cheeky to do a 40k army up in historical colors, and you're not the first person who thought clever and intelligent to slather on a swastika just so you can get all haughty when people fail to recognize its ancient, non-Arian roots and meanings to the symbol. It's not cute or smart, it's just stupid and unoriginal.
If you have some burning need to discuss the pros and cons of the universally recognized Bad Guys of WW2, go and find a nice Historical/Political forum to post it on. Even if it;s somehow 40k related, we just don't want to hear it.