Education is the key.
Many people have already written exhaustive accounts on education and Marxist worldview infiltration --like the Long March by Kimball and EK Eakman's Coning of the American Mind and, of course, the most important, The Closing of the American Mind by Allan Bloom which gets down to the foundation of ideas and where they originate.
Knowledge is power. People should understand philosophy and why they think as they do. Emotion has to be subservient to the intellect. Marxism puts emotions above it--a postmodernist idea which had roots in Modernism but crushes the thousands of years of tradition of Natural Law Theory (US foundation and Common Sense) and twists human "rights" into something bizarre and irrational which only leads to a type of slavery for everyone. Marxism is the road to serfdom (slavery).
For many of us (ahem), exhaustive accounts are sometimes not quite as accessible - maybe no money to buy the books, no good libraries, not enough time, not know all the right books, or (ahem) not enough scholarly brain cells. A synopsis or “How to Detect Marxist/godless indoctrination methods for Dummies” or something. Bit by bit.