Does the US government have an ethical obligation to prohibit hate speech on the internet based on the assumption that hate speech violates the inherent right of all citizens to individual dignity?

Does the US government have an ethical obligation to prohibit hate speech on the internet based on the assumption that hate speech violates the inherent right of all citizens to individual dignity? Explain. Would the prohibition of hate speech on the internet violate the First Amendment right to free speech if the United States Supreme Court decided that the internet serves a quasi-governmental function? Explain your answer, and include your definition of “hate speech”.