Like many other states, New Hampshire passed a law forbidding the teaching of “divisive concepts” or anything that might make students “uncomfortable.” Such laws ban teaching truthfully and direct teachers to engage in self-censorship. Teachers who dare to violate these ridiculous laws risk being fired and losing their teaching license. Such laws are, in fact, shameful and an insult to freedom of inquiry, the freedom to teach and the freedom to learn. Petty tyrants suppress knowledge.

Source: Garry Rayno: History Is Not Always Comfortable | Diane Ravitch’s blog