Let me just save these descriptions and comments on Ida's Dance off YouTube before the clips get taken down
Croatian simbols in the Malcolm episode...
(Hrvatski simboli u epizodi malcolma... )
Malcolms mom and Grandma do their traditional folk dance to celebrate St. Grotus day While they speak with Slavic accents and appear to be from somewhere in Eastern Europe, their exact nationality is never specified, and may be intended to be fictional. However, an episode which centers on a fictitious "St. Grotus Day" feast, appears to take place in a Croatian community center, with a Croatian flag and a poster of Zagreb Cathedral on the wall.
hey, to everyone guessing what Slavic nationality these people are supposed to be - they are no particular nationality, but a mix. just like you NEVER find out what Malcolm's family name is, you never find out if his mom is Croatian or whatever. there is a Croatian flag here, a Croatian coat of arms, but there is also an orthodox icon on the wall and their attire is also not Croatian...