class warfare and capitalism always come down hard on marginalized people. Leftists believe in solidarity and equity which can often mean using your voice to protect and amplify marginalized groups.

they also have a great indigenous comm for example.

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Marxist-Leninists side with the marginalized communities in society because

1. It’s the correct thing to do, morally, and
2. The only way to gain real progress is to unify marginalized groups, rather than have individual groups fight separately.

I include works that go over these topics in my introductory Marxist-Leninist reading list.