This is the point of view taught in Polish schools, so it's unthinkable for a Pole to think otherwise. However, Lithuanians, Belorussians and Ukrainians would beg to disagree.

For me the most fascinating is the case of Lithuania. Polish children are taught about the Commonwealth, common history, fighting together... So when they hear about anti-Polish sentiment there, it makes no sense to them. People are surprised and can't understand it. That's the fault of presenting a one-sided version of history and completely ignoring the POV of your neighbors.