You can't control what a teacher puts into the minds of our children. Lenin wanted to put ideology into their minds that was built on an anti-capitalist lie (propaganda). The clear message here is to insist that our teachers not mix their teaching with their own ideologies, in particular Marxist ideologies. This should not be something teachers should be "careful" about. It should be something parents prohibit. Ideology is, at base, a matter of opinion. Truth is about how to think, how to write, how to calculate and how understand the past. When we allow teachers to impart their personal ideologies into our childrens' minds, a society of free thinkers is no possible. Children should not be Marxist shmoos or community organizers. They should be taught how to be individuals.