Marxism changed its approach in the 1960s/1970s when it realized it could not win an economic war with Capitalism.

It shifted to winning an ideological war. It figured that the only way to kill capitalism was to convince people living in capitalist countries that they were evil and needed to change their ways. (You don't need as much money, you don't need as much food, you don't need as much freedom)

This was a multi-pronged approach. The primary prongs were 1) destroy the church and family - as they were the two places an individual could go to escape marxist ideology; 2) infiltrate the school systems and indoctrinate the youth to hate their country, hate their lifestyle, and create a groundswell for 'change'; 3) the change would be crafted to harm the economy and military, while simultaneously shredding individual liberties.

All of these prongs have been successful. The church and family are in tatters: church attendance is down by 50% and ~ 50% of families are broken. Americans aged 25 - 50 have negative opinions about America in a way their parents and grandparents would have considered treason.

Americans in the same age bracket are now pushing for greater spending on entitlement programs (free healthcare, free college) and "green energy" while demanding that we reduce our military budget, reduce our oil production, reduce our livestock production. The 1-2 punch loads our country with debt, diminishes our economic capacity, and interferes with our global projection of military strength.

If you were a Marxist in 1970, and you were presented with a plan to bring about this version of 2022 America - you would take it in a heartbeat. Everything you see unfolding before you is the result of Marxist ideological warfare. It started in academia - and infiltrated every facet of American life.