Digital rights organisation the Open Rights Group said the result could set a "dangerous" precedent.

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According to Jim Killock, executive director of the Open Rights Group, once you have established the right to control one category of information on the Internet, the pressure will be on the government to apply it to other areas.

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The Pew Research Center poll also finds that a large group of younger adults who tend to be more open to gay rights is driving the numbers upward.

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