It's not a big leap to think they'd do that globally for extreme results like DS where most people want to know about them and not actually visit the site.
I don’t think anyone on here will admit if it’s happening to them, but if the answer is never then that means Google is suppressing the “best” search results due to political reasons.
For a less charged example, Google won’t show pornography as the first result for a fetish term, ever. It will always show a clean page with Wikipedia as the first result regardless of safe search.
How do you even get it to show non safe for work results?
Given that there are definitely people that I have personally met that keep complaining "they keep getting racist results" in Google and Youtube, I'm guessing we are already there. As for how they build up this profile, I'm sure the people that actually know aren't allowed to tell us.
It's simply more probable that I would prefer a site that contains expert analysis of a topic/subject first.