This censorship seems to be pretty common practice by Google; they did it late last year with Gab (no links to Gab itself, just the negative headlines and wiki

This censorship seems to be pretty common practice by Google; they did it late last year with Gab (no links to Gab itself, just the negative headlines and wiki preview) and only reinstated the results - citing a "mistake" - when it was highlighted by higher-profile tweeters on the political right. This seems to me a separate issue as to whether or not sites like that should be suppressed - the point is it wasn't discussed, sanctioned or announced via any public consultation or policy (it clearly wasn't the official policy due to the reinstatement and reason given) and there was no response to protests until it became higher-profile.