Believe it or not, it wasn't always that unanimously and weirdly white supremacist. It was just the free speech site, and there were pretty normal people there. This was true even after reddit dumped all their worst, most hateful people off there. It was always like everybody hated everybody else, but then they just accepted being hated by each other because they all at least had a love of free speech in common. There were people of every political persuasion. Left wingers, libertarians... Other races too. As long as you didn't get offended easily, you fit right in!
The truth is nobody cared that we had a /v/niggers or whatever other offensive sub. It was fine, because for the most part every group stuck to their subs.
It went from that sort of community to what you see on Voat now by purposeful manipulation. The racist subs decided they weren't getting enough attention, so they started posting their content in v/funny or v/news or v/whatever. Even now if you go through their content everything on the front page is from like 6 subs.
The lesson here is that by spamming the shit out of the few largest subs to inflate their front page representation, they were able to effectively drown out everyone else.
If you don't want that to happen in this community, you have to find a way to prevent that tactic - for ANYONE. Because any segment of the userbase can do this, and suddenly your front page is 99% one single type of content.