Like with all things, it depends on how far you take it and what it applies to. Total information freedom is just as harmful as total censorship. For example, we wouldn't want to give the public access to the methods for producing extremely dangerous chemical weapons, now do we? Or patient health information, as another example. Or specific troop deployments during a time of war. Some information needs to be kept secret because, frankly, the public is often either unreliable or cannot be trusted, or, most dangerously of all, might draw the wrong conclusion from the data presented. Talk about freedoms all you want, but total freedom is no different than anarchy, and I do not want to live in an anarchist state. No, I vastly prefer my comfortable home, my comfortable lab, and my comfortable university, thank you very much.
Of course, censorship is also bad if taken too far. Political ideas must never be censored. War time casualty rates must never be censored. Alternative historical views, no matter how ridiculous, must never be censored. Criticism of government/public/corporate institutions must never be censored (even if they are wrong). While I don't trust the public to handle all the world's information correctly (like the aforementioned chemical weapon recipes), I do trust the public to generally reach somewhat reasonable conclusions when presented with correct or incorrect information.
In regards to Television violence, offensive musical lyrics, I also agree that these should never be censored. I do agree that labels need to be applied to such material, so that parents can decide what to show their children, but the material itself should never be banned, unless the production method of said material directly breaks the law (as in Child Pornography or Genuine, real life horrific violence. No real life Smash TV, please). What is shocking today, might be seen as completely normal 10, 20, 30 years from now. Just a scant 100 years ago, it was scandalous for a woman to flash her ANKLES, of all things. I'm not joking - showing your ankles was almost as perverse to the people in the 1800s as full-frontal nudity would be today. Violence in films and television programmes can add to the worth of such programs - "Saving Private Ryan" or "No Country For Old Men" would not be the pictures they are today if people had tried to make them 50 years ago. While I am not a fan of excessive, needless violence (except for satirical purposes, as in Fallout) or offensive lyrics in my media, banning them entirely would harm cinema, television and the music industry as a whole. You can ban serious swear words from music, but then someone will try to ban words like "Damn" or "hell". AC/DC's "Highway to Hell" might end up being called "Highway to Heck"! Can you imagine? "I'm on the hiiiiiighwaaaaay to HECK!"?
So here are the only things I am willing to censor:
1) Direct, SERIOUS, and SUSTAINED calls to violence and crime (As in: "Go out and shoot people in the face!")
2) Anything that required breaking serious laws to make - videos of illegal fighting, rape, child pornography
3) Information that could result in innocent people's lives being lost.
4) Information that everyday citizens have a right to keep private (Bank details, medical history, street address)
5) Sensitive technological and scientific information which might be misused, misconstrued, or otherwise inappropriately handled.