At the risk of being called a lib, there are plenty of stains on Stalin's record that we shouldn't be afraid to call out, like the ethnic deportations or the "somewhat excessive" executions of people (and their family members). Just because libs dogmatically demonize Stalin because something something 1984 Animal Farm doesn't mean we should run exactly opposite. Being able to look history critically and materially is supposed to be a distinguishing factor for Marxists.