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:
!piracy@lemmy.dbzer0.com does not have illegal content
Checked the stickied post and it is full with links to various piracy sites. This is like when trackers use "We are not sharing files, just links" defense.