They honestly feel a bit like a satirical version of North Korea by isolating themselves with certain policies, and making crazy threats to anyone they can.
I think it might just be your NSFW filter. Not sure if it was always marked as an NSFW community but it is currently.
NSFW Off - doesn't appear in the community list
NSFW On - shows as the top community when searching for Ukraine.
They honestly feel a bit like a satirical version of North Korea by isolating themselves with certain policies, and making crazy threats to anyone they can.