Until "Sex" reveals their true identity, as in the most common name the rest of the community knows them as...
You should all just ignore them. It's obviously an alias troll just trying to wind up Rafka, and it's working. So I'll leave it after I've explained this, I'm choosing option 1 after I'm finished.
You have a few options here:
1) You can act mature, understand they are an alias acting with malicious intention while concealing their true identity in order to annoy you, accept this and ignore them. The reason they conceal their identity proves they are a coward.
2) You can act immature, understand they are acting with malicious intention in order to annoy you, get annoyed by this and waste your time interacting with them which distracts you from all the goals in your life that actually need or deserve more attention.
3) You can also either join in "Sex" and help them troll Rafka, NNN, ONL. This would mean you are an unpleasant person also.
4) You can oppose them and defend such a well respected community and try to convince them otherwise. Though you would only do this if you believe they are not just trolling and you believe you can actually convince them to be a better person.
5) We can work together as a community, and agree on a rule where new members are restricted from posting and engaging until they prove themselves to be a unique individual who is actively being a good part of the community and not disturbing the peace.
6) You can ignore all these options and do whatever you want, but any action you will take will probably be seen as either of those options by other people naturally by proxy based on their judgement of you as a person anyway.