> So where does it stop?
Your example is the government forcing the teaching of falsehoods, which is wildly different from forbidding the distribution of hate speech.
Yes. An important part of learned helplessness (playing the victim) is ignoring broadly accepted definitions.
The ability to deny ideas is the ability to deny all speech.
https://en.wikipedia.org/wiki/Slippery_slope
"In logic and critical thinking, a slippery slope is a logical device in which a person asserts that some event must inevitably follow from another without any rational argument or demonstrable mechanism for the inevitability of the event in question."