Tankie is a pejorative label generally applied to authoritarian communists, especially those who support acts of repression by such regimes or their allies. More specifically, the term has been applied to those who express support for one-party Marxist–Leninist socialist republics, whether contemporary or historical.
Not a coincidence, since it’s the same group of users and they all link to one-another?
The only problem with blocking is that it doesn’t actually solve anything, just removes you from participating in conversations that are happening around you.
It’s also bad for new users who become afraid to participate.