Probably, though you may have to dig to find them. Lemmy is rapidly becoming like Reddit in that if something exists, there is probably a community for it. If your local search doesn't bring anything up, I would check on lemmyverse.net. It seems to have indexed most if not all of the current communities. A quick search just now for "liberta" pulled up roughly 10 communities.

There are definitely communities on Lemmy.ml, have a look using Lemmyverse

Not super active but maybe you can help kickstart it! !anarchism@slrpnk.net

Check out all instances with grad in their name as well as all instances with .ml domains.