What do you consider unacceptable language or unacceptable speech?

In a poll conducted by NewsBusters, about 83% of those who replied felt MSNBC should apologize for a muffled but audible "Oh God." It was called "blasphemous" in the headline.

This is a distinct political/theological line between libertarians and conservatives or liberals. Blasphemy exists in conservatism and liberalism, and both parties consider it a stonable offense. Whether you question global warming or the existence of God, the penalty is to exterminate the blasphemer, and as painfully as possible ( I guess to set an example for potential blasphemers). Libertarians consider the charge of blasphemy an encroachment on individual liberty. 83% of NewsBusters poll takers don't hold this libertarian view. 83% of NewsBusters believe there is free speech and there is unacceptable speech.

Do you believe in unacceptable speech?