“Blue Anon” is a term invented to describe absurd left-wing conspiracy theorists. It’s a play on “QAnon” (the right-wing equivalent) and was initially defined in Urban Dictionary as follows:
A loosely organized network of Democrat voters, politicians and media personalities who spread left-wing conspiracy theories such as the Russia Hoax, Jussie Smollett hoax, Ukraine hoax, Covington Kids hoax, and Brett Kavanaugh hoax. Blue Anon adherents fervently believe that right-wing extremists are going to storm Capitol Hill any day now and “remove” lawmakers from office, hence the need for the deployment of thousands of National Guard stationed at the U.S. Capitol.
About a day or two after this entry was made, Urban Dictionary removed it:
I have never even heard of a word being banned from @UrbanDictionary before they banned Blue Anon
– Neanderthal Scholar Poso (@JackPosobiec) 7 Mar 2021
Additionally, Google scrubbed any mention of Blue Anon from search results. On the other hand, virtually the entire first page of search results on DuckDuckGo consisted of relevant material:
Quite a difference between searching Google and DuckDuckGo for “Blue Anon” #blueanon
it’s almost like one of those sites is trying to hide it.
– RyeLibertarian (@RyeLibertarian) 7 Mar 2021
Some time over the following day or so, Urban Dictionary reallowed entries for Blue Anon, and they are visible at the time of writing.