The largest piracy community is hosted over at !piracy@lemmy.dbzer0.com
lemmy.world has blocked it. It appears to have also blocked !piracy@lemmy.ml.
If this is a problem for you, I'd suggest migrating accounts using LASIM to an instance that doesn't block it (such as lemm.ee).
edit:
An official announcement has been made:
lol abandon Lemmy world for an instance that specifically won’t defederate from openly Nazi instances.
Lemmy.ee is still federated with exploding-heads and the skinheads instance.