Two comments on this -
leftists have one or two kids max, so don’t worry too much about “generational marxism”.
However, leftists also have been encouraged to infest the educational system in order to get YOUR kids, you conservatives with 3-4 or more children.
And you can’t “counter” this indoctrination at home after they’ve been in school all day.
Homeschool.
And the liberal dinks (dual income, no kids) throw a hissy fit when the Texas schoolbook advisory board tries to thwart the liberal indoctrination found in these texts.