Imgur has large amounts of curated propaganda on its front page nowadays despite claiming to be social & voted etc. No republican is mentioned except to condemn them or agree with Democrat orthodoxy. Nothing criticising any mainstream democrat appears ever on the front page. You won't see something funny by a Sanders supporter criticising Hilary in any circumstances, for example. As long as there is no criticism of a Democrat there's a reasonable amount of very left wing supporting posts. eg "People deserve healthcare, rich don't pay tax, middle america has been robbed etc." The only exceptions are for the pariahs Sinema & Manchin - who opposed the mainstream. Plenty of vitriol there, which even if you think it's entirely justified underscores how there is none, zero, elsewhere.

Imgur used to show currently viral images and was all about entertainment and filled a fairly similar niche to Tik Tok. Nowadays it has gone down the outrage engagement path(?) Politics seems like most of the content and it's so curated that it's feels like Pravda levels of blatant propaganda - even reading takes that seem to agree with what you were already thinking gives you pause that you must have missed something. I'm predicting there will be zero "anti-war" posts advocating that the US stay out of the Russia-Ukraine disaster. None. Such a position, right or wrong, is likely to be held by a signficant fraction of Imgur users and indeed Democrats.

Imgur is so extreme as to be obvious especially in the light of how dramatically it changed, which is instructive for us as an example. How would we know if facebook and twitter were playing with their algorithms with just a little more subtlety than that? (And maybe in an utterly different, unpredictable and unexpected direction?)