There's not really a question about how emboldened white nationalist, anti-semitic, racist, and 'men's rights activist' groups are by the current state of affairs, no matter how horrible people may or may not have been historically. For many posting around here, at least, this is the most extreme president and circumstance in this regard in their adult lifetimes.
That it's a wakeup call to a bunch of people who maybe weren't paying attention to the existing ugly realities before isn't something I'm about to complain about or disparage. People becoming more aware of what the hell is going on is a good thing, especially if the result is that they actually give a fuck about what's going on and try to do something about it.