there have been quite a few cases recently (such as ford, orange &c) where staff have been thrown out for browsing the xxx sites on the web. puritans realised some centuries ago that to deny political rights to grown ups it facilitates to deny their sexuality too.
of course, everybody has his or her own attitude to sex, but it is the business of government, parties and corporations to stay out of it, not complicate a delicate subject still further. the internet porn panic is not new. in fact, the very term "pornography" was coined about 1850 or so, precisely the time at which a new technology, photography, seemed to bring the erotic to a mass audience, hitherto the preserve of the aristocracy who could afford to buy paintings or go on holiday to the empire.