Let me give you an example. /k/ is the weapons/military forum, and it's unironically run by US government authorities. Vulgar racial slurs are wholly permitted -- but if you question certain aspects of US military or foreign policy, or suggest that Russia/China/etc. aren't houses of cards that will topple the moment the US wills it, your comment will probably be deleted and you'll be hit with a 3-day ban.
turns out all that crap was just what everyone expected it to be: fabricated lies. And also Russians are really bad at conducting war and resorting to meat wave tactics. For a board that cares about firearms and military tactics, it didn't take too much of a far reach to dislike and laugh at Russia.