I think of ideology as the same as religion. Religion is an ideology. We have no problem teaching things (including history of conflicts involving religion) without pushing a religion. We can do the same and keep ideology out of it.
This. This is the truth, the whole truth, and nothing but the truth. Leave ideologies out from education. Let children be children, play like children and behave like children. And when they grow, let them decide themselves, what they are. Do not force them to be something they are not!
And please, do not mix guidance with education and propaganda with advices. There's certain difference between those.