Is the censorship of episode 201 of South Park, a serious infringement of our Constitutional rights?

IMO, the suits/dresses at Comedy Central caved in to vague threats by a fringe group. Concerned that theie manicured lawns might be defaced, or their high-powered cars marred by the deep scratch, the powers that be at the Network, not only censored the image of Mohammed, but also bleeped the name. They went too far, crossed the line, and created a very bad precedent for free expression!