Those groups will not use bitcoin and especially will not be on SN, instead they are on darknets. They already know that will not have "audience" here.

DarthCoin

Within limits.  

I'm not happy to co-exist with the groups I mentioned.  But we'll all have to draw our own lines.

elvismercury

nemo

Virology is a complete scam

Bitcoin is indeed for everyone.  I expect, and even want, rapists, murderers, and white supremacists to use bitcoin.

However, it would also be cool if those groups didn't think that Stacker News was a welcoming home for their bullshit propaganda.