The entire article is here.
I believe it is a sad day when history cannot be taught the way it had actually happened. Yes, there are perspectives and interpretations on it, but the fundamental facts are the same. If students are not given the opportunity to learn about all different points of view, then what is the point of education? Why bother teaching? Students should be challenged. They should be able to defend their beliefs, but at the same time be open to new ideas. Is that too much to ask?