This was recently brought to my attention, and it might be relevant to the whole alt-right thing. Anti-Semitic internet users have been highlighting names with three pairs of parentheses: ((())). The practice appears to have originated on the blog The Right Stuff, where it is placed around a Jewish person's name. It is a textual adaptation of a practice from a segment in their podcast where they would add an echo to Jewish names.
The practice has recently surfaced on Twitter. People who write articles about Donald Trump who have Jewish-sounding names can expect a wave of trolls adding the "echo" to their name, usually accompanied by textual and visual references to Nazis and/or the Holocaust.
I'm not sure just how popular it is on social media just yet, but it's an interesting look into how Neo-Nazis communicate. I'll keep my eye on it and see if any more articles on the subject pop up.