Question

[T]he government may not prohibit the expression of an idea simply because society finds the idea itself offensive or disagreeable.

Answer 1

C. Just because an idea is offensive does not mean it can be prohibited.

Answer 2

This is actually quoted from Justice William Brennan, speaking for the majority. This, he states that, "If there is a bedrock principle underlying the First Amendment, it is that the government may not prohibit the expression of an idea simply because society finds the idea itself offensive or disagreeable. . . ."
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