QinShiHuangsSchlong beat me to the punch, there are countless modern Marxists and Marxists since Lenin that have continued to apply the Marxist method to new eras and new conditions. Marxism-Leninism is referred to as an immortal science because it’s based on an ever-adapting framework for understanding the world, dialectical materialism, which in all this time have proven adaptable and fundamentally correct. We may teach Marxism in a new way with new conditions as we discover new eras, but the baseline is still applicable and necessary.