All history lessons are indoctrination at the very least. There's not some "objective history book" where people can just learn "objective history" without zero

All history lessons are indoctrination at the very least. There's not some "objective history book" where people can just learn "objective history" without zero doubts. Even for things that are taught more or less "objectively", no one alive has firsthand experience of them, unless they are recent. The end result of teaching critical thinking is that you shouldn't trust anyone completely, not yourself, and not your teachers. It's just that adding the layer of government propaganda makes things worse.