I actually knew a bunch of this because I'm weird and took a few classes on Yugoslavia in college (two, which was a lot considering my major was medieval studies), but the screenshots are entirely from here on Instagram: @aplasticplant.
If you want to watch the Yu Mex documentary by Mazzini...
[ID: 3 digital artworks depicting various human and humanoid ocs. The 1st features a skinny, dark-skinned man with yellow and brown hair, a brown suit with yellow and orange accents, and a rubber ducky isopod perched on his shoulder. His alias is written to be “Ducky”. 2nd image is a doodle page showcasing a couple, consisting of a skinny, light-skinned man with sunset-colored hair and a simple office work getup, and a large, shapeshifting-being with a night sky pattern on their skin. The page features them holding hands, a theoretical species-swap, the nudibranch form of the night being, and the office worker as a teen. The final drawing is of two siblings, both dark skinned and with kinky hair, representing matter and energy respectively. The matter sibling on the left is named Akrit, Lonnie, Elucille, and Meghan, and has four hairbuns resembling shapes (a cube, sphere, etc), a jacket representing liquid, a brick-patterned shirt representing solids, cloud-pattern pants representing gas, and colorful shoes representing plasma. The energy sibling to the right is named Nimisha and has a checkered half-jumpsuit, with shorts and a shirt worn on her left side, a matching brimmed hat, and various earrings and decals representing things that emit light. End ID]