Government Threatens To Curtail Public Access To Unclassified Information

The government is demanding that plans on how to make a gun with a 3D printer (essentially a primitive Star Trek replicator) be removed from the Internet.

Too bad the feds aren't as eager to suppress the even more destructive guides on how to produce the implements of mayhem posted on Jihadist websites.

More importantly, if the government can ban these blueprints, what is to prevent it from censoring other forms of information?

Should shop class be abolished and science education severely restricted so students don't synthesize what they've learned in chemistry, physics, and metallurgy to produce their own firearms?

Already a teacher has been reprimanded for bringing weapons to school for merely showing his second grade class run of the mill garden and household tools.

If the government is demanding that plans on how to construct a gun from a 3D printer be removed from the Internet in the name of public safety, what is to prevent these authorities from demanding websites opposing gay marriage or insisting that belief upon the Lord Jesus Christ is the only way of salvation also be removed for similar reasons?