The popularity of the Newson Report might be thought of in relation to the Third Person Effect. Worries center on children as the "other" who are affected in adverse ways, as opposed to adults who are presumably reading the report and/or believe what it says because experts and older people somehow "know better" than youth and will not be as vulnerable as they are. Of course, as the authors of "Ill Effects" state, what is important is to look at how children really use the media, instead of simply defending a "conception" of childhood.
To elaborate on the idea of censorship, I'd like to bring up the example of the Stop Online Piracy Act, which was a bill introduced in late 2011 that was meant to protect copyrights on intellectual property. While it did not pass, it generated a large amount of backlash from major sites like Wikipedia and Tumblr, who had Internet blackouts to protest it.
When it comes to policies and decision-making, it is always helpful to ask - who is really being helped or hurt? And what are the larger effects or interests behind proposed changes that go past what is simply put on the page?