Is working in an internet cafe where songs and regular movies are allowed, but opening pornographic websites is prohibited, considered unlawful (haram)?

Listening to songs and musical instruments, and watching movies where women mix with men, where nakedness is exposed, and which are accompanied by musical instruments, all of this is forbidden. It is not permissible for the shop owner or those working in it to enable anyone to do that or to assist in it. If you are able to prevent the watching of movies and the listening to songs, then there is no blame on you for this work; otherwise, leave it; because of the Almighty's saying: "They did not forbid one another from the Munkar (evil-doing) which they committed. Lo! Kanz (evil) was what they used to do."