Piracy should be encouraged, although it's not useful socialist praxis to merely partake. You can study BitTorrent protocol and download a billion files and have no detectable impact on the labour movement. That said, it is a good habit and can provide real benefit to humanity (especially distributing non-fiction literature and software tools), which has flow-on effect. But even on a basic level, you having more money because you didn't pay a distributor middleman increases your power to contribute to the labour movement, so it's a good habit, in the same way that not throwing money down a drain is a good habit for building the socialist movement.
General open information thread:
https://nukechan.net/social/thread/69.html