I think it's pretty obvious that "voters reniged" is racist (although if he were a more formidable racist he'd have spelled it with two Gs), but I have a problem with this distinction of "hate speech". This is another meme that's working it's way into the culture where the average Joe will, in a few years, just naturally assume that any speech deemed hateful is not protected.
It always starts off with something virtually everyone can relate to. Like in European countries where it's illegal to say anything to minimize or question the Holocaust. Sounds reasonable unless you give it a scintilla of thought, after which it becomes painfully obvious that you just outlawed any discussion or analsysis of the Holocaust and the history surrounding it.
Part of freedom is allowing others to say things you don't want to hear, and you best be really damn careful about shutting them up, because to do so opens the door to shutting you up as well.